ConversationFragment.java

   1package eu.siacs.conversations.ui;
   2
   3import static eu.siacs.conversations.ui.XmppActivity.EXTRA_ACCOUNT;
   4import static eu.siacs.conversations.ui.XmppActivity.REQUEST_INVITE_TO_CONVERSATION;
   5import static eu.siacs.conversations.ui.util.SoftKeyboardUtils.hideSoftKeyboard;
   6import static eu.siacs.conversations.utils.PermissionUtils.allGranted;
   7import static eu.siacs.conversations.utils.PermissionUtils.audioGranted;
   8import static eu.siacs.conversations.utils.PermissionUtils.cameraGranted;
   9import static eu.siacs.conversations.utils.PermissionUtils.getFirstDenied;
  10import static eu.siacs.conversations.utils.PermissionUtils.writeGranted;
  11
  12import android.Manifest;
  13import android.annotation.SuppressLint;
  14import android.app.Activity;
  15import android.app.Fragment;
  16import android.app.FragmentManager;
  17import android.app.PendingIntent;
  18import android.content.ActivityNotFoundException;
  19import android.content.Context;
  20import android.content.DialogInterface;
  21import android.content.Intent;
  22import android.content.IntentSender.SendIntentException;
  23import android.content.SharedPreferences;
  24import android.content.pm.PackageManager;
  25import android.net.Uri;
  26import android.os.Build;
  27import android.os.Bundle;
  28import android.os.Handler;
  29import android.os.SystemClock;
  30import android.preference.PreferenceManager;
  31import android.provider.MediaStore;
  32import android.text.Editable;
  33import android.text.TextUtils;
  34import android.util.Log;
  35import android.view.ContextMenu;
  36import android.view.ContextMenu.ContextMenuInfo;
  37import android.view.Gravity;
  38import android.view.LayoutInflater;
  39import android.view.Menu;
  40import android.view.MenuInflater;
  41import android.view.MenuItem;
  42import android.view.MotionEvent;
  43import android.view.View;
  44import android.view.View.OnClickListener;
  45import android.view.ViewGroup;
  46import android.view.inputmethod.EditorInfo;
  47import android.view.inputmethod.InputMethodManager;
  48import android.widget.AbsListView;
  49import android.widget.AbsListView.OnScrollListener;
  50import android.widget.AdapterView;
  51import android.widget.AdapterView.AdapterContextMenuInfo;
  52import android.widget.CheckBox;
  53import android.widget.ListView;
  54import android.widget.PopupMenu;
  55import android.widget.TextView.OnEditorActionListener;
  56import android.widget.Toast;
  57
  58import androidx.annotation.IdRes;
  59import androidx.annotation.NonNull;
  60import androidx.annotation.StringRes;
  61import androidx.appcompat.app.AlertDialog;
  62import androidx.core.view.inputmethod.InputConnectionCompat;
  63import androidx.core.view.inputmethod.InputContentInfoCompat;
  64import androidx.databinding.DataBindingUtil;
  65
  66import com.google.common.base.Optional;
  67import com.google.common.collect.ImmutableList;
  68
  69import eu.siacs.conversations.Config;
  70import eu.siacs.conversations.R;
  71import eu.siacs.conversations.crypto.axolotl.AxolotlService;
  72import eu.siacs.conversations.crypto.axolotl.FingerprintStatus;
  73import eu.siacs.conversations.databinding.FragmentConversationBinding;
  74import eu.siacs.conversations.entities.Account;
  75import eu.siacs.conversations.entities.Blockable;
  76import eu.siacs.conversations.entities.Contact;
  77import eu.siacs.conversations.entities.Conversation;
  78import eu.siacs.conversations.entities.Conversational;
  79import eu.siacs.conversations.entities.DownloadableFile;
  80import eu.siacs.conversations.entities.Message;
  81import eu.siacs.conversations.entities.MucOptions;
  82import eu.siacs.conversations.entities.MucOptions.User;
  83import eu.siacs.conversations.entities.Presence;
  84import eu.siacs.conversations.entities.ReadByMarker;
  85import eu.siacs.conversations.entities.Transferable;
  86import eu.siacs.conversations.entities.TransferablePlaceholder;
  87import eu.siacs.conversations.http.HttpDownloadConnection;
  88import eu.siacs.conversations.persistance.FileBackend;
  89import eu.siacs.conversations.services.CallIntegrationConnectionService;
  90import eu.siacs.conversations.services.MessageArchiveService;
  91import eu.siacs.conversations.services.QuickConversationsService;
  92import eu.siacs.conversations.services.XmppConnectionService;
  93import eu.siacs.conversations.ui.adapter.MediaPreviewAdapter;
  94import eu.siacs.conversations.ui.adapter.MessageAdapter;
  95import eu.siacs.conversations.ui.util.ActivityResult;
  96import eu.siacs.conversations.ui.util.Attachment;
  97import eu.siacs.conversations.ui.util.ConversationMenuConfigurator;
  98import eu.siacs.conversations.ui.util.DateSeparator;
  99import eu.siacs.conversations.ui.util.EditMessageActionModeCallback;
 100import eu.siacs.conversations.ui.util.ListViewUtils;
 101import eu.siacs.conversations.ui.util.MenuDoubleTabUtil;
 102import eu.siacs.conversations.ui.util.MucDetailsContextMenuHelper;
 103import eu.siacs.conversations.ui.util.PendingItem;
 104import eu.siacs.conversations.ui.util.PresenceSelector;
 105import eu.siacs.conversations.ui.util.ScrollState;
 106import eu.siacs.conversations.ui.util.SendButtonAction;
 107import eu.siacs.conversations.ui.util.SendButtonTool;
 108import eu.siacs.conversations.ui.util.ShareUtil;
 109import eu.siacs.conversations.ui.util.ViewUtil;
 110import eu.siacs.conversations.ui.widget.EditMessage;
 111import eu.siacs.conversations.utils.AccountUtils;
 112import eu.siacs.conversations.utils.Compatibility;
 113import eu.siacs.conversations.utils.GeoHelper;
 114import eu.siacs.conversations.utils.MessageUtils;
 115import eu.siacs.conversations.utils.NickValidityChecker;
 116import eu.siacs.conversations.utils.PermissionUtils;
 117import eu.siacs.conversations.utils.QuickLoader;
 118import eu.siacs.conversations.utils.StylingHelper;
 119import eu.siacs.conversations.utils.TimeFrameUtils;
 120import eu.siacs.conversations.utils.UIHelper;
 121import eu.siacs.conversations.xmpp.Jid;
 122import eu.siacs.conversations.xmpp.XmppConnection;
 123import eu.siacs.conversations.xmpp.chatstate.ChatState;
 124import eu.siacs.conversations.xmpp.jingle.AbstractJingleConnection;
 125import eu.siacs.conversations.xmpp.jingle.JingleConnectionManager;
 126import eu.siacs.conversations.xmpp.jingle.JingleFileTransferConnection;
 127import eu.siacs.conversations.xmpp.jingle.Media;
 128import eu.siacs.conversations.xmpp.jingle.OngoingRtpSession;
 129import eu.siacs.conversations.xmpp.jingle.RtpCapability;
 130
 131import org.jetbrains.annotations.NotNull;
 132
 133import java.util.ArrayList;
 134import java.util.Arrays;
 135import java.util.Collection;
 136import java.util.Collections;
 137import java.util.HashSet;
 138import java.util.Iterator;
 139import java.util.List;
 140import java.util.Set;
 141import java.util.UUID;
 142import java.util.concurrent.atomic.AtomicBoolean;
 143
 144public class ConversationFragment extends XmppFragment
 145        implements EditMessage.KeyboardListener,
 146                MessageAdapter.OnContactPictureLongClicked,
 147                MessageAdapter.OnContactPictureClicked {
 148
 149    public static final int REQUEST_SEND_MESSAGE = 0x0201;
 150    public static final int REQUEST_DECRYPT_PGP = 0x0202;
 151    public static final int REQUEST_ENCRYPT_MESSAGE = 0x0207;
 152    public static final int REQUEST_TRUST_KEYS_TEXT = 0x0208;
 153    public static final int REQUEST_TRUST_KEYS_ATTACHMENTS = 0x0209;
 154    public static final int REQUEST_START_DOWNLOAD = 0x0210;
 155    public static final int REQUEST_ADD_EDITOR_CONTENT = 0x0211;
 156    public static final int REQUEST_COMMIT_ATTACHMENTS = 0x0212;
 157    public static final int REQUEST_START_AUDIO_CALL = 0x213;
 158    public static final int REQUEST_START_VIDEO_CALL = 0x214;
 159    public static final int ATTACHMENT_CHOICE_CHOOSE_IMAGE = 0x0301;
 160    public static final int ATTACHMENT_CHOICE_TAKE_PHOTO = 0x0302;
 161    public static final int ATTACHMENT_CHOICE_CHOOSE_FILE = 0x0303;
 162    public static final int ATTACHMENT_CHOICE_RECORD_VOICE = 0x0304;
 163    public static final int ATTACHMENT_CHOICE_LOCATION = 0x0305;
 164    public static final int ATTACHMENT_CHOICE_INVALID = 0x0306;
 165    public static final int ATTACHMENT_CHOICE_RECORD_VIDEO = 0x0307;
 166
 167    public static final String RECENTLY_USED_QUICK_ACTION = "recently_used_quick_action";
 168    public static final String STATE_CONVERSATION_UUID =
 169            ConversationFragment.class.getName() + ".uuid";
 170    public static final String STATE_SCROLL_POSITION =
 171            ConversationFragment.class.getName() + ".scroll_position";
 172    public static final String STATE_PHOTO_URI =
 173            ConversationFragment.class.getName() + ".media_previews";
 174    public static final String STATE_MEDIA_PREVIEWS =
 175            ConversationFragment.class.getName() + ".take_photo_uri";
 176    private static final String STATE_LAST_MESSAGE_UUID = "state_last_message_uuid";
 177
 178    private final List<Message> messageList = new ArrayList<>();
 179    private final PendingItem<ActivityResult> postponedActivityResult = new PendingItem<>();
 180    private final PendingItem<String> pendingConversationsUuid = new PendingItem<>();
 181    private final PendingItem<ArrayList<Attachment>> pendingMediaPreviews = new PendingItem<>();
 182    private final PendingItem<Bundle> pendingExtras = new PendingItem<>();
 183    private final PendingItem<Uri> pendingTakePhotoUri = new PendingItem<>();
 184    private final PendingItem<ScrollState> pendingScrollState = new PendingItem<>();
 185    private final PendingItem<String> pendingLastMessageUuid = new PendingItem<>();
 186    private final PendingItem<Message> pendingMessage = new PendingItem<>();
 187    public Uri mPendingEditorContent = null;
 188    protected MessageAdapter messageListAdapter;
 189    private MediaPreviewAdapter mediaPreviewAdapter;
 190    private String lastMessageUuid = null;
 191    private Conversation conversation;
 192    private FragmentConversationBinding binding;
 193    private Toast messageLoaderToast;
 194    private ConversationsActivity activity;
 195    private boolean reInitRequiredOnStart = true;
 196    private final OnClickListener clickToMuc =
 197            new OnClickListener() {
 198
 199                @Override
 200                public void onClick(View v) {
 201                    ConferenceDetailsActivity.open(getActivity(), conversation);
 202                }
 203            };
 204    private final OnClickListener leaveMuc =
 205            new OnClickListener() {
 206
 207                @Override
 208                public void onClick(View v) {
 209                    activity.xmppConnectionService.archiveConversation(conversation);
 210                }
 211            };
 212    private final OnClickListener joinMuc =
 213            new OnClickListener() {
 214
 215                @Override
 216                public void onClick(View v) {
 217                    activity.xmppConnectionService.joinMuc(conversation);
 218                }
 219            };
 220
 221    private final OnClickListener acceptJoin =
 222            new OnClickListener() {
 223                @Override
 224                public void onClick(View v) {
 225                    conversation.setAttribute("accept_non_anonymous", true);
 226                    activity.xmppConnectionService.updateConversation(conversation);
 227                    activity.xmppConnectionService.joinMuc(conversation);
 228                }
 229            };
 230
 231    private final OnClickListener enterPassword =
 232            new OnClickListener() {
 233
 234                @Override
 235                public void onClick(View v) {
 236                    MucOptions muc = conversation.getMucOptions();
 237                    String password = muc.getPassword();
 238                    if (password == null) {
 239                        password = "";
 240                    }
 241                    activity.quickPasswordEdit(
 242                            password,
 243                            value -> {
 244                                activity.xmppConnectionService.providePasswordForMuc(
 245                                        conversation, value);
 246                                return null;
 247                            });
 248                }
 249            };
 250    private final OnScrollListener mOnScrollListener =
 251            new OnScrollListener() {
 252
 253                @Override
 254                public void onScrollStateChanged(AbsListView view, int scrollState) {
 255                    if (AbsListView.OnScrollListener.SCROLL_STATE_IDLE == scrollState) {
 256                        fireReadEvent();
 257                    }
 258                }
 259
 260                @Override
 261                public void onScroll(
 262                        final AbsListView view,
 263                        int firstVisibleItem,
 264                        int visibleItemCount,
 265                        int totalItemCount) {
 266                    toggleScrollDownButton(view);
 267                    synchronized (ConversationFragment.this.messageList) {
 268                        if (firstVisibleItem < 5
 269                                && conversation != null
 270                                && conversation.messagesLoaded.compareAndSet(true, false)
 271                                && messageList.size() > 0) {
 272                            long timestamp;
 273                            if (messageList.get(0).getType() == Message.TYPE_STATUS
 274                                    && messageList.size() >= 2) {
 275                                timestamp = messageList.get(1).getTimeSent();
 276                            } else {
 277                                timestamp = messageList.get(0).getTimeSent();
 278                            }
 279                            activity.xmppConnectionService.loadMoreMessages(
 280                                    conversation,
 281                                    timestamp,
 282                                    new XmppConnectionService.OnMoreMessagesLoaded() {
 283                                        @Override
 284                                        public void onMoreMessagesLoaded(
 285                                                final int c, final Conversation conversation) {
 286                                            if (ConversationFragment.this.conversation
 287                                                    != conversation) {
 288                                                conversation.messagesLoaded.set(true);
 289                                                return;
 290                                            }
 291                                            runOnUiThread(
 292                                                    () -> {
 293                                                        synchronized (messageList) {
 294                                                            final int oldPosition =
 295                                                                    binding.messagesView
 296                                                                            .getFirstVisiblePosition();
 297                                                            Message message = null;
 298                                                            int childPos;
 299                                                            for (childPos = 0;
 300                                                                    childPos + oldPosition
 301                                                                            < messageList.size();
 302                                                                    ++childPos) {
 303                                                                message =
 304                                                                        messageList.get(
 305                                                                                oldPosition
 306                                                                                        + childPos);
 307                                                                if (message.getType()
 308                                                                        != Message.TYPE_STATUS) {
 309                                                                    break;
 310                                                                }
 311                                                            }
 312                                                            final String uuid =
 313                                                                    message != null
 314                                                                            ? message.getUuid()
 315                                                                            : null;
 316                                                            View v =
 317                                                                    binding.messagesView.getChildAt(
 318                                                                            childPos);
 319                                                            final int pxOffset =
 320                                                                    (v == null) ? 0 : v.getTop();
 321                                                            ConversationFragment.this.conversation
 322                                                                    .populateWithMessages(
 323                                                                            ConversationFragment
 324                                                                                    .this
 325                                                                                    .messageList);
 326                                                            try {
 327                                                                updateStatusMessages();
 328                                                            } catch (IllegalStateException e) {
 329                                                                Log.d(
 330                                                                        Config.LOGTAG,
 331                                                                        "caught illegal state exception while updating status messages");
 332                                                            }
 333                                                            messageListAdapter
 334                                                                    .notifyDataSetChanged();
 335                                                            int pos =
 336                                                                    Math.max(
 337                                                                            getIndexOf(
 338                                                                                    uuid,
 339                                                                                    messageList),
 340                                                                            0);
 341                                                            binding.messagesView
 342                                                                    .setSelectionFromTop(
 343                                                                            pos, pxOffset);
 344                                                            if (messageLoaderToast != null) {
 345                                                                messageLoaderToast.cancel();
 346                                                            }
 347                                                            conversation.messagesLoaded.set(true);
 348                                                        }
 349                                                    });
 350                                        }
 351
 352                                        @Override
 353                                        public void informUser(final int resId) {
 354
 355                                            runOnUiThread(
 356                                                    () -> {
 357                                                        if (messageLoaderToast != null) {
 358                                                            messageLoaderToast.cancel();
 359                                                        }
 360                                                        if (ConversationFragment.this.conversation
 361                                                                != conversation) {
 362                                                            return;
 363                                                        }
 364                                                        messageLoaderToast =
 365                                                                Toast.makeText(
 366                                                                        view.getContext(),
 367                                                                        resId,
 368                                                                        Toast.LENGTH_LONG);
 369                                                        messageLoaderToast.show();
 370                                                    });
 371                                        }
 372                                    });
 373                        }
 374                    }
 375                }
 376            };
 377    private final EditMessage.OnCommitContentListener mEditorContentListener =
 378            new EditMessage.OnCommitContentListener() {
 379                @Override
 380                public boolean onCommitContent(
 381                        InputContentInfoCompat inputContentInfo,
 382                        int flags,
 383                        Bundle opts,
 384                        String[] contentMimeTypes) {
 385                    // try to get permission to read the image, if applicable
 386                    if ((flags & InputConnectionCompat.INPUT_CONTENT_GRANT_READ_URI_PERMISSION)
 387                            != 0) {
 388                        try {
 389                            inputContentInfo.requestPermission();
 390                        } catch (Exception e) {
 391                            Log.e(
 392                                    Config.LOGTAG,
 393                                    "InputContentInfoCompat#requestPermission() failed.",
 394                                    e);
 395                            Toast.makeText(
 396                                            getActivity(),
 397                                            activity.getString(
 398                                                    R.string.no_permission_to_access_x,
 399                                                    inputContentInfo.getDescription()),
 400                                            Toast.LENGTH_LONG)
 401                                    .show();
 402                            return false;
 403                        }
 404                    }
 405                    if (hasPermissions(
 406                            REQUEST_ADD_EDITOR_CONTENT,
 407                            Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
 408                        attachEditorContentToConversation(inputContentInfo.getContentUri());
 409                    } else {
 410                        mPendingEditorContent = inputContentInfo.getContentUri();
 411                    }
 412                    return true;
 413                }
 414            };
 415    private Message selectedMessage;
 416    private final OnClickListener mEnableAccountListener =
 417            new OnClickListener() {
 418                @Override
 419                public void onClick(View v) {
 420                    final Account account = conversation == null ? null : conversation.getAccount();
 421                    if (account != null) {
 422                        account.setOption(Account.OPTION_SOFT_DISABLED, false);
 423                        account.setOption(Account.OPTION_DISABLED, false);
 424                        activity.xmppConnectionService.updateAccount(account);
 425                    }
 426                }
 427            };
 428    private final OnClickListener mUnblockClickListener =
 429            new OnClickListener() {
 430                @Override
 431                public void onClick(final View v) {
 432                    v.post(() -> v.setVisibility(View.INVISIBLE));
 433                    if (conversation.isDomainBlocked()) {
 434                        BlockContactDialog.show(activity, conversation);
 435                    } else {
 436                        unblockConversation(conversation);
 437                    }
 438                }
 439            };
 440    private final OnClickListener mBlockClickListener = this::showBlockSubmenu;
 441    private final OnClickListener mAddBackClickListener =
 442            new OnClickListener() {
 443
 444                @Override
 445                public void onClick(View v) {
 446                    final Contact contact = conversation == null ? null : conversation.getContact();
 447                    if (contact != null) {
 448                        activity.xmppConnectionService.createContact(contact, true);
 449                        activity.switchToContactDetails(contact);
 450                    }
 451                }
 452            };
 453    private final View.OnLongClickListener mLongPressBlockListener = this::showBlockSubmenu;
 454    private final OnClickListener mAllowPresenceSubscription =
 455            new OnClickListener() {
 456                @Override
 457                public void onClick(View v) {
 458                    final Contact contact = conversation == null ? null : conversation.getContact();
 459                    if (contact != null) {
 460                        activity.xmppConnectionService.sendPresencePacket(
 461                                contact.getAccount(),
 462                                activity.xmppConnectionService
 463                                        .getPresenceGenerator()
 464                                        .sendPresenceUpdatesTo(contact));
 465                        hideSnackbar();
 466                    }
 467                }
 468            };
 469    protected OnClickListener clickToDecryptListener =
 470            new OnClickListener() {
 471
 472                @Override
 473                public void onClick(View v) {
 474                    PendingIntent pendingIntent =
 475                            conversation.getAccount().getPgpDecryptionService().getPendingIntent();
 476                    if (pendingIntent != null) {
 477                        try {
 478                            getActivity()
 479                                    .startIntentSenderForResult(
 480                                            pendingIntent.getIntentSender(),
 481                                            REQUEST_DECRYPT_PGP,
 482                                            null,
 483                                            0,
 484                                            0,
 485                                            0,
 486                                            Compatibility.pgpStartIntentSenderOptions());
 487                        } catch (SendIntentException e) {
 488                            Toast.makeText(
 489                                            getActivity(),
 490                                            R.string.unable_to_connect_to_keychain,
 491                                            Toast.LENGTH_SHORT)
 492                                    .show();
 493                            conversation
 494                                    .getAccount()
 495                                    .getPgpDecryptionService()
 496                                    .continueDecryption(true);
 497                        }
 498                    }
 499                    updateSnackBar(conversation);
 500                }
 501            };
 502    private final AtomicBoolean mSendingPgpMessage = new AtomicBoolean(false);
 503    private final OnEditorActionListener mEditorActionListener =
 504            (v, actionId, event) -> {
 505                if (actionId == EditorInfo.IME_ACTION_SEND) {
 506                    InputMethodManager imm =
 507                            (InputMethodManager)
 508                                    activity.getSystemService(Context.INPUT_METHOD_SERVICE);
 509                    if (imm != null && imm.isFullscreenMode()) {
 510                        imm.hideSoftInputFromWindow(v.getWindowToken(), 0);
 511                    }
 512                    sendMessage();
 513                    return true;
 514                } else {
 515                    return false;
 516                }
 517            };
 518    private final OnClickListener mScrollButtonListener =
 519            new OnClickListener() {
 520
 521                @Override
 522                public void onClick(View v) {
 523                    stopScrolling();
 524                    setSelection(binding.messagesView.getCount() - 1, true);
 525                }
 526            };
 527    private final OnClickListener mSendButtonListener =
 528            new OnClickListener() {
 529
 530                @Override
 531                public void onClick(View v) {
 532                    Object tag = v.getTag();
 533                    if (tag instanceof SendButtonAction) {
 534                        SendButtonAction action = (SendButtonAction) tag;
 535                        switch (action) {
 536                            case TAKE_PHOTO:
 537                            case RECORD_VIDEO:
 538                            case SEND_LOCATION:
 539                            case RECORD_VOICE:
 540                            case CHOOSE_PICTURE:
 541                                attachFile(action.toChoice());
 542                                break;
 543                            case CANCEL:
 544                                if (conversation != null) {
 545                                    if (conversation.setCorrectingMessage(null)) {
 546                                        binding.textinput.setText("");
 547                                        binding.textinput.append(conversation.getDraftMessage());
 548                                        conversation.setDraftMessage(null);
 549                                    } else if (conversation.getMode() == Conversation.MODE_MULTI) {
 550                                        conversation.setNextCounterpart(null);
 551                                        binding.textinput.setText("");
 552                                    } else {
 553                                        binding.textinput.setText("");
 554                                    }
 555                                    updateChatMsgHint();
 556                                    updateSendButton();
 557                                    updateEditablity();
 558                                }
 559                                break;
 560                            default:
 561                                sendMessage();
 562                        }
 563                    } else {
 564                        sendMessage();
 565                    }
 566                }
 567            };
 568    private int completionIndex = 0;
 569    private int lastCompletionLength = 0;
 570    private String incomplete;
 571    private int lastCompletionCursor;
 572    private boolean firstWord = false;
 573    private Message mPendingDownloadableMessage;
 574
 575    private static ConversationFragment findConversationFragment(Activity activity) {
 576        Fragment fragment = activity.getFragmentManager().findFragmentById(R.id.main_fragment);
 577        if (fragment instanceof ConversationFragment) {
 578            return (ConversationFragment) fragment;
 579        }
 580        fragment = activity.getFragmentManager().findFragmentById(R.id.secondary_fragment);
 581        if (fragment instanceof ConversationFragment) {
 582            return (ConversationFragment) fragment;
 583        }
 584        return null;
 585    }
 586
 587    public static void startStopPending(Activity activity) {
 588        ConversationFragment fragment = findConversationFragment(activity);
 589        if (fragment != null) {
 590            fragment.messageListAdapter.startStopPending();
 591        }
 592    }
 593
 594    public static void downloadFile(Activity activity, Message message) {
 595        ConversationFragment fragment = findConversationFragment(activity);
 596        if (fragment != null) {
 597            fragment.startDownloadable(message);
 598        }
 599    }
 600
 601    public static void registerPendingMessage(Activity activity, Message message) {
 602        ConversationFragment fragment = findConversationFragment(activity);
 603        if (fragment != null) {
 604            fragment.pendingMessage.push(message);
 605        }
 606    }
 607
 608    public static void openPendingMessage(Activity activity) {
 609        ConversationFragment fragment = findConversationFragment(activity);
 610        if (fragment != null) {
 611            Message message = fragment.pendingMessage.pop();
 612            if (message != null) {
 613                fragment.messageListAdapter.openDownloadable(message);
 614            }
 615        }
 616    }
 617
 618    public static Conversation getConversation(Activity activity) {
 619        return getConversation(activity, R.id.secondary_fragment);
 620    }
 621
 622    private static Conversation getConversation(Activity activity, @IdRes int res) {
 623        final Fragment fragment = activity.getFragmentManager().findFragmentById(res);
 624        if (fragment instanceof ConversationFragment) {
 625            return ((ConversationFragment) fragment).getConversation();
 626        } else {
 627            return null;
 628        }
 629    }
 630
 631    public static ConversationFragment get(Activity activity) {
 632        FragmentManager fragmentManager = activity.getFragmentManager();
 633        Fragment fragment = fragmentManager.findFragmentById(R.id.main_fragment);
 634        if (fragment instanceof ConversationFragment) {
 635            return (ConversationFragment) fragment;
 636        } else {
 637            fragment = fragmentManager.findFragmentById(R.id.secondary_fragment);
 638            return fragment instanceof ConversationFragment
 639                    ? (ConversationFragment) fragment
 640                    : null;
 641        }
 642    }
 643
 644    public static Conversation getConversationReliable(Activity activity) {
 645        final Conversation conversation = getConversation(activity, R.id.secondary_fragment);
 646        if (conversation != null) {
 647            return conversation;
 648        }
 649        return getConversation(activity, R.id.main_fragment);
 650    }
 651
 652    private static boolean scrolledToBottom(AbsListView listView) {
 653        final int count = listView.getCount();
 654        if (count == 0) {
 655            return true;
 656        } else if (listView.getLastVisiblePosition() == count - 1) {
 657            final View lastChild = listView.getChildAt(listView.getChildCount() - 1);
 658            return lastChild != null && lastChild.getBottom() <= listView.getHeight();
 659        } else {
 660            return false;
 661        }
 662    }
 663
 664    private void toggleScrollDownButton() {
 665        toggleScrollDownButton(binding.messagesView);
 666    }
 667
 668    private void toggleScrollDownButton(AbsListView listView) {
 669        if (conversation == null) {
 670            return;
 671        }
 672        if (scrolledToBottom(listView)) {
 673            lastMessageUuid = null;
 674            hideUnreadMessagesCount();
 675        } else {
 676            binding.scrollToBottomButton.setEnabled(true);
 677            binding.scrollToBottomButton.show();
 678            if (lastMessageUuid == null) {
 679                lastMessageUuid = conversation.getLatestMessage().getUuid();
 680            }
 681            if (conversation.getReceivedMessagesCountSinceUuid(lastMessageUuid) > 0) {
 682                binding.unreadCountCustomView.setVisibility(View.VISIBLE);
 683            }
 684        }
 685    }
 686
 687    private int getIndexOf(String uuid, List<Message> messages) {
 688        if (uuid == null) {
 689            return messages.size() - 1;
 690        }
 691        for (int i = 0; i < messages.size(); ++i) {
 692            if (uuid.equals(messages.get(i).getUuid())) {
 693                return i;
 694            } else {
 695                Message next = messages.get(i);
 696                while (next != null && next.wasMergedIntoPrevious()) {
 697                    if (uuid.equals(next.getUuid())) {
 698                        return i;
 699                    }
 700                    next = next.next();
 701                }
 702            }
 703        }
 704        return -1;
 705    }
 706
 707    private ScrollState getScrollPosition() {
 708        final ListView listView = this.binding == null ? null : this.binding.messagesView;
 709        if (listView == null
 710                || listView.getCount() == 0
 711                || listView.getLastVisiblePosition() == listView.getCount() - 1) {
 712            return null;
 713        } else {
 714            final int pos = listView.getFirstVisiblePosition();
 715            final View view = listView.getChildAt(0);
 716            if (view == null) {
 717                return null;
 718            } else {
 719                return new ScrollState(pos, view.getTop());
 720            }
 721        }
 722    }
 723
 724    private void setScrollPosition(ScrollState scrollPosition, String lastMessageUuid) {
 725        if (scrollPosition != null) {
 726
 727            this.lastMessageUuid = lastMessageUuid;
 728            if (lastMessageUuid != null) {
 729                binding.unreadCountCustomView.setUnreadCount(
 730                        conversation.getReceivedMessagesCountSinceUuid(lastMessageUuid));
 731            }
 732            // TODO maybe this needs a 'post'
 733            this.binding.messagesView.setSelectionFromTop(
 734                    scrollPosition.position, scrollPosition.offset);
 735            toggleScrollDownButton();
 736        }
 737    }
 738
 739    private void attachLocationToConversation(Conversation conversation, Uri uri) {
 740        if (conversation == null) {
 741            return;
 742        }
 743        activity.xmppConnectionService.attachLocationToConversation(
 744                conversation,
 745                uri,
 746                new UiCallback<Message>() {
 747
 748                    @Override
 749                    public void success(Message message) {}
 750
 751                    @Override
 752                    public void error(int errorCode, Message object) {
 753                        // TODO show possible pgp error
 754                    }
 755
 756                    @Override
 757                    public void userInputRequired(PendingIntent pi, Message object) {}
 758                });
 759    }
 760
 761    private void attachFileToConversation(Conversation conversation, Uri uri, String type) {
 762        if (conversation == null) {
 763            return;
 764        }
 765        final Toast prepareFileToast =
 766                Toast.makeText(getActivity(), getText(R.string.preparing_file), Toast.LENGTH_LONG);
 767        prepareFileToast.show();
 768        activity.delegateUriPermissionsToService(uri);
 769        activity.xmppConnectionService.attachFileToConversation(
 770                conversation,
 771                uri,
 772                type,
 773                new UiInformableCallback<Message>() {
 774                    @Override
 775                    public void inform(final String text) {
 776                        hidePrepareFileToast(prepareFileToast);
 777                        runOnUiThread(() -> activity.replaceToast(text));
 778                    }
 779
 780                    @Override
 781                    public void success(Message message) {
 782                        runOnUiThread(() -> activity.hideToast());
 783                        hidePrepareFileToast(prepareFileToast);
 784                    }
 785
 786                    @Override
 787                    public void error(final int errorCode, Message message) {
 788                        hidePrepareFileToast(prepareFileToast);
 789                        runOnUiThread(() -> activity.replaceToast(getString(errorCode)));
 790                    }
 791
 792                    @Override
 793                    public void userInputRequired(PendingIntent pi, Message message) {
 794                        hidePrepareFileToast(prepareFileToast);
 795                    }
 796                });
 797    }
 798
 799    public void attachEditorContentToConversation(Uri uri) {
 800        mediaPreviewAdapter.addMediaPreviews(
 801                Attachment.of(getActivity(), uri, Attachment.Type.FILE));
 802        toggleInputMethod();
 803    }
 804
 805    private void attachImageToConversation(Conversation conversation, Uri uri, String type) {
 806        if (conversation == null) {
 807            return;
 808        }
 809        final Toast prepareFileToast =
 810                Toast.makeText(getActivity(), getText(R.string.preparing_image), Toast.LENGTH_LONG);
 811        prepareFileToast.show();
 812        activity.delegateUriPermissionsToService(uri);
 813        activity.xmppConnectionService.attachImageToConversation(
 814                conversation,
 815                uri,
 816                type,
 817                new UiCallback<Message>() {
 818
 819                    @Override
 820                    public void userInputRequired(PendingIntent pi, Message object) {
 821                        hidePrepareFileToast(prepareFileToast);
 822                    }
 823
 824                    @Override
 825                    public void success(Message message) {
 826                        hidePrepareFileToast(prepareFileToast);
 827                    }
 828
 829                    @Override
 830                    public void error(final int error, final Message message) {
 831                        hidePrepareFileToast(prepareFileToast);
 832                        final ConversationsActivity activity = ConversationFragment.this.activity;
 833                        if (activity == null) {
 834                            return;
 835                        }
 836                        activity.runOnUiThread(() -> activity.replaceToast(getString(error)));
 837                    }
 838                });
 839    }
 840
 841    private void hidePrepareFileToast(final Toast prepareFileToast) {
 842        if (prepareFileToast != null && activity != null) {
 843            activity.runOnUiThread(prepareFileToast::cancel);
 844        }
 845    }
 846
 847    private void sendMessage() {
 848        if (mediaPreviewAdapter.hasAttachments()) {
 849            commitAttachments();
 850            return;
 851        }
 852        final Editable text = this.binding.textinput.getText();
 853        final String body = text == null ? "" : text.toString();
 854        final Conversation conversation = this.conversation;
 855        if (body.length() == 0 || conversation == null) {
 856            return;
 857        }
 858        if (trustKeysIfNeeded(conversation, REQUEST_TRUST_KEYS_TEXT)) {
 859            return;
 860        }
 861        final Message message;
 862        if (conversation.getCorrectingMessage() == null) {
 863            message = new Message(conversation, body, conversation.getNextEncryption());
 864            Message.configurePrivateMessage(message);
 865        } else {
 866            message = conversation.getCorrectingMessage();
 867            message.setBody(body);
 868            message.putEdited(message.getUuid(), message.getServerMsgId());
 869            message.setServerMsgId(null);
 870            message.setUuid(UUID.randomUUID().toString());
 871        }
 872        switch (conversation.getNextEncryption()) {
 873            case Message.ENCRYPTION_PGP:
 874                sendPgpMessage(message);
 875                break;
 876            default:
 877                sendMessage(message);
 878        }
 879    }
 880
 881    private boolean trustKeysIfNeeded(final Conversation conversation, final int requestCode) {
 882        return conversation.getNextEncryption() == Message.ENCRYPTION_AXOLOTL
 883                && trustKeysIfNeeded(requestCode);
 884    }
 885
 886    protected boolean trustKeysIfNeeded(int requestCode) {
 887        AxolotlService axolotlService = conversation.getAccount().getAxolotlService();
 888        final List<Jid> targets = axolotlService.getCryptoTargets(conversation);
 889        boolean hasUnaccepted = !conversation.getAcceptedCryptoTargets().containsAll(targets);
 890        boolean hasUndecidedOwn =
 891                !axolotlService
 892                        .getKeysWithTrust(FingerprintStatus.createActiveUndecided())
 893                        .isEmpty();
 894        boolean hasUndecidedContacts =
 895                !axolotlService
 896                        .getKeysWithTrust(FingerprintStatus.createActiveUndecided(), targets)
 897                        .isEmpty();
 898        boolean hasPendingKeys = !axolotlService.findDevicesWithoutSession(conversation).isEmpty();
 899        boolean hasNoTrustedKeys = axolotlService.anyTargetHasNoTrustedKeys(targets);
 900        boolean downloadInProgress = axolotlService.hasPendingKeyFetches(targets);
 901        if (hasUndecidedOwn
 902                || hasUndecidedContacts
 903                || hasPendingKeys
 904                || hasNoTrustedKeys
 905                || hasUnaccepted
 906                || downloadInProgress) {
 907            axolotlService.createSessionsIfNeeded(conversation);
 908            Intent intent = new Intent(getActivity(), TrustKeysActivity.class);
 909            String[] contacts = new String[targets.size()];
 910            for (int i = 0; i < contacts.length; ++i) {
 911                contacts[i] = targets.get(i).toString();
 912            }
 913            intent.putExtra("contacts", contacts);
 914            intent.putExtra(
 915                    EXTRA_ACCOUNT,
 916                    conversation.getAccount().getJid().asBareJid().toEscapedString());
 917            intent.putExtra("conversation", conversation.getUuid());
 918            startActivityForResult(intent, requestCode);
 919            return true;
 920        } else {
 921            return false;
 922        }
 923    }
 924
 925    public void updateChatMsgHint() {
 926        final boolean multi = conversation.getMode() == Conversation.MODE_MULTI;
 927        if (conversation.getCorrectingMessage() != null) {
 928            this.binding.textInputHint.setVisibility(View.GONE);
 929            this.binding.textinput.setHint(R.string.send_corrected_message);
 930        } else if (multi && conversation.getNextCounterpart() != null) {
 931            this.binding.textinput.setHint(R.string.send_unencrypted_message);
 932            this.binding.textInputHint.setVisibility(View.VISIBLE);
 933            this.binding.textInputHint.setText(
 934                    getString(
 935                            R.string.send_private_message_to,
 936                            conversation.getNextCounterpart().getResource()));
 937        } else if (multi && !conversation.getMucOptions().participating()) {
 938            this.binding.textInputHint.setVisibility(View.GONE);
 939            this.binding.textinput.setHint(R.string.you_are_not_participating);
 940        } else {
 941            this.binding.textInputHint.setVisibility(View.GONE);
 942            this.binding.textinput.setHint(UIHelper.getMessageHint(getActivity(), conversation));
 943            getActivity().invalidateOptionsMenu();
 944        }
 945    }
 946
 947    public void setupIme() {
 948        this.binding.textinput.refreshIme();
 949    }
 950
 951    private void handleActivityResult(ActivityResult activityResult) {
 952        if (activityResult.resultCode == Activity.RESULT_OK) {
 953            handlePositiveActivityResult(activityResult.requestCode, activityResult.data);
 954        } else {
 955            handleNegativeActivityResult(activityResult.requestCode);
 956        }
 957    }
 958
 959    private void handlePositiveActivityResult(int requestCode, final Intent data) {
 960        switch (requestCode) {
 961            case REQUEST_TRUST_KEYS_TEXT:
 962                sendMessage();
 963                break;
 964            case REQUEST_TRUST_KEYS_ATTACHMENTS:
 965                commitAttachments();
 966                break;
 967            case REQUEST_START_AUDIO_CALL:
 968                triggerRtpSession(RtpSessionActivity.ACTION_MAKE_VOICE_CALL);
 969                break;
 970            case REQUEST_START_VIDEO_CALL:
 971                triggerRtpSession(RtpSessionActivity.ACTION_MAKE_VIDEO_CALL);
 972                break;
 973            case ATTACHMENT_CHOICE_CHOOSE_IMAGE:
 974                final List<Attachment> imageUris =
 975                        Attachment.extractAttachments(getActivity(), data, Attachment.Type.IMAGE);
 976                mediaPreviewAdapter.addMediaPreviews(imageUris);
 977                toggleInputMethod();
 978                break;
 979            case ATTACHMENT_CHOICE_TAKE_PHOTO:
 980                final Uri takePhotoUri = pendingTakePhotoUri.pop();
 981                if (takePhotoUri != null) {
 982                    mediaPreviewAdapter.addMediaPreviews(
 983                            Attachment.of(getActivity(), takePhotoUri, Attachment.Type.IMAGE));
 984                    toggleInputMethod();
 985                } else {
 986                    Log.d(Config.LOGTAG, "lost take photo uri. unable to to attach");
 987                }
 988                break;
 989            case ATTACHMENT_CHOICE_CHOOSE_FILE:
 990            case ATTACHMENT_CHOICE_RECORD_VIDEO:
 991            case ATTACHMENT_CHOICE_RECORD_VOICE:
 992                final Attachment.Type type =
 993                        requestCode == ATTACHMENT_CHOICE_RECORD_VOICE
 994                                ? Attachment.Type.RECORDING
 995                                : Attachment.Type.FILE;
 996                final List<Attachment> fileUris =
 997                        Attachment.extractAttachments(getActivity(), data, type);
 998                mediaPreviewAdapter.addMediaPreviews(fileUris);
 999                toggleInputMethod();
1000                break;
1001            case ATTACHMENT_CHOICE_LOCATION:
1002                final double latitude = data.getDoubleExtra("latitude", 0);
1003                final double longitude = data.getDoubleExtra("longitude", 0);
1004                final int accuracy = data.getIntExtra("accuracy", 0);
1005                final Uri geo;
1006                if (accuracy > 0) {
1007                    geo = Uri.parse(String.format("geo:%s,%s;u=%s", latitude, longitude, accuracy));
1008                } else {
1009                    geo = Uri.parse(String.format("geo:%s,%s", latitude, longitude));
1010                }
1011                mediaPreviewAdapter.addMediaPreviews(
1012                        Attachment.of(getActivity(), geo, Attachment.Type.LOCATION));
1013                toggleInputMethod();
1014                break;
1015            case REQUEST_INVITE_TO_CONVERSATION:
1016                XmppActivity.ConferenceInvite invite = XmppActivity.ConferenceInvite.parse(data);
1017                if (invite != null) {
1018                    if (invite.execute(activity)) {
1019                        activity.mToast =
1020                                Toast.makeText(
1021                                        activity, R.string.creating_conference, Toast.LENGTH_LONG);
1022                        activity.mToast.show();
1023                    }
1024                }
1025                break;
1026        }
1027    }
1028
1029    private void commitAttachments() {
1030        final List<Attachment> attachments = mediaPreviewAdapter.getAttachments();
1031        if (anyNeedsExternalStoragePermission(attachments)
1032                && !hasPermissions(
1033                        REQUEST_COMMIT_ATTACHMENTS, Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
1034            return;
1035        }
1036        if (trustKeysIfNeeded(conversation, REQUEST_TRUST_KEYS_ATTACHMENTS)) {
1037            return;
1038        }
1039        final PresenceSelector.OnPresenceSelected callback =
1040                () -> {
1041                    for (Iterator<Attachment> i = attachments.iterator(); i.hasNext(); i.remove()) {
1042                        final Attachment attachment = i.next();
1043                        if (attachment.getType() == Attachment.Type.LOCATION) {
1044                            attachLocationToConversation(conversation, attachment.getUri());
1045                        } else if (attachment.getType() == Attachment.Type.IMAGE) {
1046                            Log.d(
1047                                    Config.LOGTAG,
1048                                    "ConversationsActivity.commitAttachments() - attaching image to conversations. CHOOSE_IMAGE");
1049                            attachImageToConversation(
1050                                    conversation, attachment.getUri(), attachment.getMime());
1051                        } else {
1052                            Log.d(
1053                                    Config.LOGTAG,
1054                                    "ConversationsActivity.commitAttachments() - attaching file to conversations. CHOOSE_FILE/RECORD_VOICE/RECORD_VIDEO");
1055                            attachFileToConversation(
1056                                    conversation, attachment.getUri(), attachment.getMime());
1057                        }
1058                    }
1059                    mediaPreviewAdapter.notifyDataSetChanged();
1060                    toggleInputMethod();
1061                };
1062        if (conversation == null
1063                || conversation.getMode() == Conversation.MODE_MULTI
1064                || Attachment.canBeSendInband(attachments)
1065                || (conversation.getAccount().httpUploadAvailable()
1066                        && FileBackend.allFilesUnderSize(
1067                                getActivity(), attachments, getMaxHttpUploadSize(conversation)))) {
1068            callback.onPresenceSelected();
1069        } else {
1070            activity.selectPresence(conversation, callback);
1071        }
1072    }
1073
1074    private static boolean anyNeedsExternalStoragePermission(
1075            final Collection<Attachment> attachments) {
1076        for (final Attachment attachment : attachments) {
1077            if (attachment.getType() != Attachment.Type.LOCATION) {
1078                return true;
1079            }
1080        }
1081        return false;
1082    }
1083
1084    public void toggleInputMethod() {
1085        boolean hasAttachments = mediaPreviewAdapter.hasAttachments();
1086        binding.textinput.setVisibility(hasAttachments ? View.GONE : View.VISIBLE);
1087        binding.mediaPreview.setVisibility(hasAttachments ? View.VISIBLE : View.GONE);
1088        updateSendButton();
1089    }
1090
1091    private void handleNegativeActivityResult(int requestCode) {
1092        switch (requestCode) {
1093            case ATTACHMENT_CHOICE_TAKE_PHOTO:
1094                if (pendingTakePhotoUri.clear()) {
1095                    Log.d(
1096                            Config.LOGTAG,
1097                            "cleared pending photo uri after negative activity result");
1098                }
1099                break;
1100        }
1101    }
1102
1103    @Override
1104    public void onActivityResult(int requestCode, int resultCode, final Intent data) {
1105        super.onActivityResult(requestCode, resultCode, data);
1106        ActivityResult activityResult = ActivityResult.of(requestCode, resultCode, data);
1107        if (activity != null && activity.xmppConnectionService != null) {
1108            handleActivityResult(activityResult);
1109        } else {
1110            this.postponedActivityResult.push(activityResult);
1111        }
1112    }
1113
1114    public void unblockConversation(final Blockable conversation) {
1115        activity.xmppConnectionService.sendUnblockRequest(conversation);
1116    }
1117
1118    @Override
1119    public void onAttach(Activity activity) {
1120        super.onAttach(activity);
1121        Log.d(Config.LOGTAG, "ConversationFragment.onAttach()");
1122        if (activity instanceof ConversationsActivity) {
1123            this.activity = (ConversationsActivity) activity;
1124        } else {
1125            throw new IllegalStateException(
1126                    "Trying to attach fragment to activity that is not the ConversationsActivity");
1127        }
1128    }
1129
1130    @Override
1131    public void onDetach() {
1132        super.onDetach();
1133        this.activity = null; // TODO maybe not a good idea since some callbacks really need it
1134    }
1135
1136    @Override
1137    public void onCreate(Bundle savedInstanceState) {
1138        super.onCreate(savedInstanceState);
1139        setHasOptionsMenu(true);
1140    }
1141
1142    @Override
1143    public void onCreateOptionsMenu(Menu menu, MenuInflater menuInflater) {
1144        menuInflater.inflate(R.menu.fragment_conversation, menu);
1145        final MenuItem menuMucDetails = menu.findItem(R.id.action_muc_details);
1146        final MenuItem menuContactDetails = menu.findItem(R.id.action_contact_details);
1147        final MenuItem menuInviteContact = menu.findItem(R.id.action_invite);
1148        final MenuItem menuMute = menu.findItem(R.id.action_mute);
1149        final MenuItem menuUnmute = menu.findItem(R.id.action_unmute);
1150        final MenuItem menuCall = menu.findItem(R.id.action_call);
1151        final MenuItem menuOngoingCall = menu.findItem(R.id.action_ongoing_call);
1152        final MenuItem menuVideoCall = menu.findItem(R.id.action_video_call);
1153        final MenuItem menuTogglePinned = menu.findItem(R.id.action_toggle_pinned);
1154
1155        if (conversation != null) {
1156            if (conversation.getMode() == Conversation.MODE_MULTI) {
1157                menuContactDetails.setVisible(false);
1158                menuInviteContact.setVisible(conversation.getMucOptions().canInvite());
1159                menuMucDetails.setTitle(
1160                        conversation.getMucOptions().isPrivateAndNonAnonymous()
1161                                ? R.string.action_muc_details
1162                                : R.string.channel_details);
1163                menuCall.setVisible(false);
1164                menuOngoingCall.setVisible(false);
1165            } else {
1166                final XmppConnectionService service =
1167                        activity == null ? null : activity.xmppConnectionService;
1168                final Optional<OngoingRtpSession> ongoingRtpSession =
1169                        service == null
1170                                ? Optional.absent()
1171                                : service.getJingleConnectionManager()
1172                                        .getOngoingRtpConnection(conversation.getContact());
1173                if (ongoingRtpSession.isPresent()) {
1174                    menuOngoingCall.setVisible(true);
1175                    menuCall.setVisible(false);
1176                } else {
1177                    menuOngoingCall.setVisible(false);
1178                    final RtpCapability.Capability rtpCapability =
1179                            RtpCapability.check(conversation.getContact());
1180                    final boolean cameraAvailable =
1181                            activity != null && activity.isCameraFeatureAvailable();
1182                    menuCall.setVisible(rtpCapability != RtpCapability.Capability.NONE);
1183                    menuVideoCall.setVisible(
1184                            rtpCapability == RtpCapability.Capability.VIDEO && cameraAvailable);
1185                }
1186                menuContactDetails.setVisible(!this.conversation.withSelf());
1187                menuMucDetails.setVisible(false);
1188                menuInviteContact.setVisible(
1189                        service != null
1190                                && service.findConferenceServer(conversation.getAccount()) != null);
1191            }
1192            if (conversation.isMuted()) {
1193                menuMute.setVisible(false);
1194            } else {
1195                menuUnmute.setVisible(false);
1196            }
1197            ConversationMenuConfigurator.configureAttachmentMenu(conversation, menu);
1198            ConversationMenuConfigurator.configureEncryptionMenu(conversation, menu);
1199            if (conversation.getBooleanAttribute(Conversation.ATTRIBUTE_PINNED_ON_TOP, false)) {
1200                menuTogglePinned.setTitle(R.string.remove_from_favorites);
1201            } else {
1202                menuTogglePinned.setTitle(R.string.add_to_favorites);
1203            }
1204        }
1205        super.onCreateOptionsMenu(menu, menuInflater);
1206    }
1207
1208    @Override
1209    public View onCreateView(
1210            final LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
1211        this.binding =
1212                DataBindingUtil.inflate(inflater, R.layout.fragment_conversation, container, false);
1213        binding.getRoot().setOnClickListener(null); // TODO why the fuck did we do this?
1214
1215        binding.textinput.addTextChangedListener(
1216                new StylingHelper.MessageEditorStyler(binding.textinput));
1217
1218        binding.textinput.setOnEditorActionListener(mEditorActionListener);
1219        binding.textinput.setRichContentListener(new String[] {"image/*"}, mEditorContentListener);
1220
1221        binding.textSendButton.setOnClickListener(this.mSendButtonListener);
1222
1223        binding.scrollToBottomButton.setOnClickListener(this.mScrollButtonListener);
1224        binding.messagesView.setOnScrollListener(mOnScrollListener);
1225        binding.messagesView.setTranscriptMode(ListView.TRANSCRIPT_MODE_NORMAL);
1226        mediaPreviewAdapter = new MediaPreviewAdapter(this);
1227        binding.mediaPreview.setAdapter(mediaPreviewAdapter);
1228        messageListAdapter = new MessageAdapter((XmppActivity) getActivity(), this.messageList);
1229        messageListAdapter.setOnContactPictureClicked(this);
1230        messageListAdapter.setOnContactPictureLongClicked(this);
1231        binding.messagesView.setAdapter(messageListAdapter);
1232
1233        registerForContextMenu(binding.messagesView);
1234
1235        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
1236            this.binding.textinput.setCustomInsertionActionModeCallback(
1237                    new EditMessageActionModeCallback(this.binding.textinput));
1238        }
1239
1240        return binding.getRoot();
1241    }
1242
1243    @Override
1244    public void onDestroyView() {
1245        super.onDestroyView();
1246        Log.d(Config.LOGTAG, "ConversationFragment.onDestroyView()");
1247        messageListAdapter.setOnContactPictureClicked(null);
1248        messageListAdapter.setOnContactPictureLongClicked(null);
1249    }
1250
1251    private void quoteText(String text) {
1252        if (binding.textinput.isEnabled()) {
1253            binding.textinput.insertAsQuote(text);
1254            binding.textinput.requestFocus();
1255            InputMethodManager inputMethodManager =
1256                    (InputMethodManager)
1257                            getActivity().getSystemService(Context.INPUT_METHOD_SERVICE);
1258            if (inputMethodManager != null) {
1259                inputMethodManager.showSoftInput(
1260                        binding.textinput, InputMethodManager.SHOW_IMPLICIT);
1261            }
1262        }
1263    }
1264
1265    private void quoteMessage(Message message) {
1266        quoteText(MessageUtils.prepareQuote(message));
1267    }
1268
1269    @Override
1270    public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
1271        // This should cancel any remaining click events that would otherwise trigger links
1272        v.dispatchTouchEvent(MotionEvent.obtain(0, 0, MotionEvent.ACTION_CANCEL, 0f, 0f, 0));
1273        synchronized (this.messageList) {
1274            super.onCreateContextMenu(menu, v, menuInfo);
1275            AdapterView.AdapterContextMenuInfo acmi = (AdapterContextMenuInfo) menuInfo;
1276            this.selectedMessage = this.messageList.get(acmi.position);
1277            populateContextMenu(menu);
1278        }
1279    }
1280
1281    private void populateContextMenu(ContextMenu menu) {
1282        final Message m = this.selectedMessage;
1283        final Transferable t = m.getTransferable();
1284        Message relevantForCorrection = m;
1285        while (relevantForCorrection.mergeable(relevantForCorrection.next())) {
1286            relevantForCorrection = relevantForCorrection.next();
1287        }
1288        if (m.getType() != Message.TYPE_STATUS && m.getType() != Message.TYPE_RTP_SESSION) {
1289
1290            if (m.getEncryption() == Message.ENCRYPTION_AXOLOTL_NOT_FOR_THIS_DEVICE
1291                    || m.getEncryption() == Message.ENCRYPTION_AXOLOTL_FAILED) {
1292                return;
1293            }
1294
1295            if (m.getStatus() == Message.STATUS_RECEIVED
1296                    && t != null
1297                    && (t.getStatus() == Transferable.STATUS_CANCELLED
1298                            || t.getStatus() == Transferable.STATUS_FAILED)) {
1299                return;
1300            }
1301
1302            final boolean deleted = m.isDeleted();
1303            final boolean encrypted =
1304                    m.getEncryption() == Message.ENCRYPTION_DECRYPTION_FAILED
1305                            || m.getEncryption() == Message.ENCRYPTION_PGP;
1306            final boolean receiving =
1307                    m.getStatus() == Message.STATUS_RECEIVED
1308                            && (t instanceof JingleFileTransferConnection
1309                                    || t instanceof HttpDownloadConnection);
1310            activity.getMenuInflater().inflate(R.menu.message_context, menu);
1311            menu.setHeaderTitle(R.string.message_options);
1312            final MenuItem reportAndBlock = menu.findItem(R.id.action_report_and_block);
1313            MenuItem openWith = menu.findItem(R.id.open_with);
1314            MenuItem copyMessage = menu.findItem(R.id.copy_message);
1315            MenuItem copyLink = menu.findItem(R.id.copy_link);
1316            MenuItem quoteMessage = menu.findItem(R.id.quote_message);
1317            MenuItem retryDecryption = menu.findItem(R.id.retry_decryption);
1318            MenuItem correctMessage = menu.findItem(R.id.correct_message);
1319            MenuItem shareWith = menu.findItem(R.id.share_with);
1320            MenuItem sendAgain = menu.findItem(R.id.send_again);
1321            MenuItem copyUrl = menu.findItem(R.id.copy_url);
1322            MenuItem downloadFile = menu.findItem(R.id.download_file);
1323            MenuItem cancelTransmission = menu.findItem(R.id.cancel_transmission);
1324            MenuItem deleteFile = menu.findItem(R.id.delete_file);
1325            MenuItem showErrorMessage = menu.findItem(R.id.show_error_message);
1326            final boolean unInitiatedButKnownSize = MessageUtils.unInitiatedButKnownSize(m);
1327            final boolean showError =
1328                    m.getStatus() == Message.STATUS_SEND_FAILED
1329                            && m.getErrorMessage() != null
1330                            && !Message.ERROR_MESSAGE_CANCELLED.equals(m.getErrorMessage());
1331            final Conversational conversational = m.getConversation();
1332            if (m.getStatus() == Message.STATUS_RECEIVED && conversational instanceof Conversation c) {
1333                final XmppConnection connection = c.getAccount().getXmppConnection();
1334                if (c.isWithStranger()
1335                        && m.getServerMsgId() != null
1336                        && !c.isBlocked()
1337                        && connection != null
1338                        && connection.getFeatures().spamReporting()) {
1339                    reportAndBlock.setVisible(true);
1340                }
1341            }
1342            if (!m.isFileOrImage()
1343                    && !encrypted
1344                    && !m.isGeoUri()
1345                    && !m.treatAsDownloadable()
1346                    && !unInitiatedButKnownSize
1347                    && t == null) {
1348                copyMessage.setVisible(true);
1349                quoteMessage.setVisible(!showError && MessageUtils.prepareQuote(m).length() > 0);
1350                final String scheme = ShareUtil.getLinkScheme(m.getMergedBody());
1351                if ("xmpp".equals(scheme)) {
1352                    copyLink.setTitle(R.string.copy_jabber_id);
1353                    copyLink.setVisible(true);
1354                } else if (scheme != null) {
1355                    copyLink.setVisible(true);
1356                }
1357            }
1358            if (m.getEncryption() == Message.ENCRYPTION_DECRYPTION_FAILED && !deleted) {
1359                retryDecryption.setVisible(true);
1360            }
1361            if (!showError
1362                    && relevantForCorrection.getType() == Message.TYPE_TEXT
1363                    && !m.isGeoUri()
1364                    && relevantForCorrection.isLastCorrectableMessage()
1365                    && m.getConversation() instanceof Conversation) {
1366                correctMessage.setVisible(true);
1367            }
1368            if ((m.isFileOrImage() && !deleted && !receiving)
1369                    || (m.getType() == Message.TYPE_TEXT && !m.treatAsDownloadable())
1370                            && !unInitiatedButKnownSize
1371                            && t == null) {
1372                shareWith.setVisible(true);
1373            }
1374            if (m.getStatus() == Message.STATUS_SEND_FAILED) {
1375                sendAgain.setVisible(true);
1376            }
1377            if (m.hasFileOnRemoteHost()
1378                    || m.isGeoUri()
1379                    || m.treatAsDownloadable()
1380                    || unInitiatedButKnownSize
1381                    || t instanceof HttpDownloadConnection) {
1382                copyUrl.setVisible(true);
1383            }
1384            if (m.isFileOrImage() && deleted && m.hasFileOnRemoteHost()) {
1385                downloadFile.setVisible(true);
1386                downloadFile.setTitle(
1387                        activity.getString(
1388                                R.string.download_x_file,
1389                                UIHelper.getFileDescriptionString(activity, m)));
1390            }
1391            final boolean waitingOfferedSending =
1392                    m.getStatus() == Message.STATUS_WAITING
1393                            || m.getStatus() == Message.STATUS_UNSEND
1394                            || m.getStatus() == Message.STATUS_OFFERED;
1395            final boolean cancelable =
1396                    (t != null && !deleted) || waitingOfferedSending && m.needsUploading();
1397            if (cancelable) {
1398                cancelTransmission.setVisible(true);
1399            }
1400            if (m.isFileOrImage() && !deleted && !cancelable) {
1401                final String path = m.getRelativeFilePath();
1402                if (path == null
1403                        || !path.startsWith("/")
1404                        || FileBackend.inConversationsDirectory(requireActivity(), path)) {
1405                    deleteFile.setVisible(true);
1406                    deleteFile.setTitle(
1407                            activity.getString(
1408                                    R.string.delete_x_file,
1409                                    UIHelper.getFileDescriptionString(activity, m)));
1410                }
1411            }
1412            if (showError) {
1413                showErrorMessage.setVisible(true);
1414            }
1415            final String mime = m.isFileOrImage() ? m.getMimeType() : null;
1416            if ((m.isGeoUri() && GeoHelper.openInOsmAnd(getActivity(), m))
1417                    || (mime != null && mime.startsWith("audio/"))) {
1418                openWith.setVisible(true);
1419            }
1420        }
1421    }
1422
1423    @Override
1424    public boolean onContextItemSelected(MenuItem item) {
1425        switch (item.getItemId()) {
1426            case R.id.share_with:
1427                ShareUtil.share(activity, selectedMessage);
1428                return true;
1429            case R.id.correct_message:
1430                correctMessage(selectedMessage);
1431                return true;
1432            case R.id.copy_message:
1433                ShareUtil.copyToClipboard(activity, selectedMessage);
1434                return true;
1435            case R.id.copy_link:
1436                ShareUtil.copyLinkToClipboard(activity, selectedMessage);
1437                return true;
1438            case R.id.quote_message:
1439                quoteMessage(selectedMessage);
1440                return true;
1441            case R.id.send_again:
1442                resendMessage(selectedMessage);
1443                return true;
1444            case R.id.copy_url:
1445                ShareUtil.copyUrlToClipboard(activity, selectedMessage);
1446                return true;
1447            case R.id.download_file:
1448                startDownloadable(selectedMessage);
1449                return true;
1450            case R.id.cancel_transmission:
1451                cancelTransmission(selectedMessage);
1452                return true;
1453            case R.id.retry_decryption:
1454                retryDecryption(selectedMessage);
1455                return true;
1456            case R.id.delete_file:
1457                deleteFile(selectedMessage);
1458                return true;
1459            case R.id.show_error_message:
1460                showErrorMessage(selectedMessage);
1461                return true;
1462            case R.id.open_with:
1463                openWith(selectedMessage);
1464                return true;
1465            case R.id.action_report_and_block:
1466                reportMessage(selectedMessage);
1467                return true;
1468            default:
1469                return super.onContextItemSelected(item);
1470        }
1471    }
1472
1473    @Override
1474    public boolean onOptionsItemSelected(final MenuItem item) {
1475        if (MenuDoubleTabUtil.shouldIgnoreTap()) {
1476            return false;
1477        } else if (conversation == null) {
1478            return super.onOptionsItemSelected(item);
1479        }
1480        switch (item.getItemId()) {
1481            case R.id.encryption_choice_axolotl:
1482            case R.id.encryption_choice_pgp:
1483            case R.id.encryption_choice_none:
1484                handleEncryptionSelection(item);
1485                break;
1486            case R.id.attach_choose_picture:
1487            case R.id.attach_take_picture:
1488            case R.id.attach_record_video:
1489            case R.id.attach_choose_file:
1490            case R.id.attach_record_voice:
1491            case R.id.attach_location:
1492                handleAttachmentSelection(item);
1493                break;
1494            case R.id.action_search:
1495                startSearch();
1496                break;
1497            case R.id.action_archive:
1498                activity.xmppConnectionService.archiveConversation(conversation);
1499                break;
1500            case R.id.action_contact_details:
1501                activity.switchToContactDetails(conversation.getContact());
1502                break;
1503            case R.id.action_muc_details:
1504                ConferenceDetailsActivity.open(getActivity(), conversation);
1505                break;
1506            case R.id.action_invite:
1507                startActivityForResult(
1508                        ChooseContactActivity.create(activity, conversation),
1509                        REQUEST_INVITE_TO_CONVERSATION);
1510                break;
1511            case R.id.action_clear_history:
1512                clearHistoryDialog(conversation);
1513                break;
1514            case R.id.action_mute:
1515                muteConversationDialog(conversation);
1516                break;
1517            case R.id.action_unmute:
1518                unMuteConversation(conversation);
1519                break;
1520            case R.id.action_block:
1521            case R.id.action_unblock:
1522                final Activity activity = getActivity();
1523                if (activity instanceof XmppActivity) {
1524                    BlockContactDialog.show((XmppActivity) activity, conversation);
1525                }
1526                break;
1527            case R.id.action_audio_call:
1528                checkPermissionAndTriggerAudioCall();
1529                break;
1530            case R.id.action_video_call:
1531                checkPermissionAndTriggerVideoCall();
1532                break;
1533            case R.id.action_ongoing_call:
1534                returnToOngoingCall();
1535                break;
1536            case R.id.action_toggle_pinned:
1537                togglePinned();
1538                break;
1539            default:
1540                break;
1541        }
1542        return super.onOptionsItemSelected(item);
1543    }
1544
1545    private void startSearch() {
1546        final Intent intent = new Intent(getActivity(), SearchActivity.class);
1547        intent.putExtra(SearchActivity.EXTRA_CONVERSATION_UUID, conversation.getUuid());
1548        startActivity(intent);
1549    }
1550
1551    private void returnToOngoingCall() {
1552        final Optional<OngoingRtpSession> ongoingRtpSession =
1553                activity.xmppConnectionService
1554                        .getJingleConnectionManager()
1555                        .getOngoingRtpConnection(conversation.getContact());
1556        if (ongoingRtpSession.isPresent()) {
1557            final OngoingRtpSession id = ongoingRtpSession.get();
1558            final Intent intent = new Intent(getActivity(), RtpSessionActivity.class);
1559            intent.putExtra(
1560                    RtpSessionActivity.EXTRA_ACCOUNT,
1561                    id.getAccount().getJid().asBareJid().toEscapedString());
1562            intent.putExtra(RtpSessionActivity.EXTRA_WITH, id.getWith().toEscapedString());
1563            if (id instanceof AbstractJingleConnection.Id) {
1564                intent.setAction(Intent.ACTION_VIEW);
1565                intent.putExtra(RtpSessionActivity.EXTRA_SESSION_ID, id.getSessionId());
1566            } else if (id instanceof JingleConnectionManager.RtpSessionProposal) {
1567                if (((JingleConnectionManager.RtpSessionProposal) id).media.contains(Media.VIDEO)) {
1568                    intent.setAction(RtpSessionActivity.ACTION_MAKE_VIDEO_CALL);
1569                } else {
1570                    intent.setAction(RtpSessionActivity.ACTION_MAKE_VOICE_CALL);
1571                }
1572            }
1573            startActivity(intent);
1574        }
1575    }
1576
1577    private void togglePinned() {
1578        final boolean pinned =
1579                conversation.getBooleanAttribute(Conversation.ATTRIBUTE_PINNED_ON_TOP, false);
1580        conversation.setAttribute(Conversation.ATTRIBUTE_PINNED_ON_TOP, !pinned);
1581        activity.xmppConnectionService.updateConversation(conversation);
1582        activity.invalidateOptionsMenu();
1583    }
1584
1585    private void checkPermissionAndTriggerAudioCall() {
1586        if (activity.mUseTor || conversation.getAccount().isOnion()) {
1587            Toast.makeText(activity, R.string.disable_tor_to_make_call, Toast.LENGTH_SHORT).show();
1588            return;
1589        }
1590        final List<String> permissions;
1591        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S) {
1592            permissions =
1593                    Arrays.asList(
1594                            Manifest.permission.RECORD_AUDIO,
1595                            Manifest.permission.BLUETOOTH_CONNECT);
1596        } else {
1597            permissions = Collections.singletonList(Manifest.permission.RECORD_AUDIO);
1598        }
1599        if (hasPermissions(REQUEST_START_AUDIO_CALL, permissions)) {
1600            triggerRtpSession(RtpSessionActivity.ACTION_MAKE_VOICE_CALL);
1601        }
1602    }
1603
1604    private void checkPermissionAndTriggerVideoCall() {
1605        if (activity.mUseTor || conversation.getAccount().isOnion()) {
1606            Toast.makeText(activity, R.string.disable_tor_to_make_call, Toast.LENGTH_SHORT).show();
1607            return;
1608        }
1609        final List<String> permissions;
1610        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S) {
1611            permissions =
1612                    Arrays.asList(
1613                            Manifest.permission.RECORD_AUDIO,
1614                            Manifest.permission.CAMERA,
1615                            Manifest.permission.BLUETOOTH_CONNECT);
1616        } else {
1617            permissions =
1618                    Arrays.asList(Manifest.permission.RECORD_AUDIO, Manifest.permission.CAMERA);
1619        }
1620        if (hasPermissions(REQUEST_START_VIDEO_CALL, permissions)) {
1621            triggerRtpSession(RtpSessionActivity.ACTION_MAKE_VIDEO_CALL);
1622        }
1623    }
1624
1625    private void triggerRtpSession(final String action) {
1626        if (activity.xmppConnectionService.getJingleConnectionManager().isBusy()) {
1627            Toast.makeText(getActivity(), R.string.only_one_call_at_a_time, Toast.LENGTH_LONG)
1628                    .show();
1629            return;
1630        }
1631        final Account account = conversation.getAccount();
1632        if (account.setOption(Account.OPTION_SOFT_DISABLED, false)) {
1633            activity.xmppConnectionService.updateAccount(account);
1634        }
1635        final Contact contact = conversation.getContact();
1636        if (Config.USE_JINGLE_MESSAGE_INIT && RtpCapability.jmiSupport(contact)) {
1637            triggerRtpSession(contact.getAccount(), contact.getJid().asBareJid(), action);
1638        } else {
1639            final RtpCapability.Capability capability;
1640            if (action.equals(RtpSessionActivity.ACTION_MAKE_VIDEO_CALL)) {
1641                capability = RtpCapability.Capability.VIDEO;
1642            } else {
1643                capability = RtpCapability.Capability.AUDIO;
1644            }
1645            PresenceSelector.selectFullJidForDirectRtpConnection(
1646                    activity,
1647                    contact,
1648                    capability,
1649                    fullJid -> {
1650                        triggerRtpSession(contact.getAccount(), fullJid, action);
1651                    });
1652        }
1653    }
1654
1655    private void triggerRtpSession(final Account account, final Jid with, final String action) {
1656        CallIntegrationConnectionService.placeCall(activity.xmppConnectionService, account,with,RtpSessionActivity.actionToMedia(action));
1657    }
1658
1659    private void handleAttachmentSelection(MenuItem item) {
1660        switch (item.getItemId()) {
1661            case R.id.attach_choose_picture:
1662                attachFile(ATTACHMENT_CHOICE_CHOOSE_IMAGE);
1663                break;
1664            case R.id.attach_take_picture:
1665                attachFile(ATTACHMENT_CHOICE_TAKE_PHOTO);
1666                break;
1667            case R.id.attach_record_video:
1668                attachFile(ATTACHMENT_CHOICE_RECORD_VIDEO);
1669                break;
1670            case R.id.attach_choose_file:
1671                attachFile(ATTACHMENT_CHOICE_CHOOSE_FILE);
1672                break;
1673            case R.id.attach_record_voice:
1674                attachFile(ATTACHMENT_CHOICE_RECORD_VOICE);
1675                break;
1676            case R.id.attach_location:
1677                attachFile(ATTACHMENT_CHOICE_LOCATION);
1678                break;
1679        }
1680    }
1681
1682    private void handleEncryptionSelection(MenuItem item) {
1683        if (conversation == null) {
1684            return;
1685        }
1686        final boolean updated;
1687        switch (item.getItemId()) {
1688            case R.id.encryption_choice_none:
1689                updated = conversation.setNextEncryption(Message.ENCRYPTION_NONE);
1690                item.setChecked(true);
1691                break;
1692            case R.id.encryption_choice_pgp:
1693                if (activity.hasPgp()) {
1694                    if (conversation.getAccount().getPgpSignature() != null) {
1695                        updated = conversation.setNextEncryption(Message.ENCRYPTION_PGP);
1696                        item.setChecked(true);
1697                    } else {
1698                        updated = false;
1699                        activity.announcePgp(
1700                                conversation.getAccount(),
1701                                conversation,
1702                                null,
1703                                activity.onOpenPGPKeyPublished);
1704                    }
1705                } else {
1706                    activity.showInstallPgpDialog();
1707                    updated = false;
1708                }
1709                break;
1710            case R.id.encryption_choice_axolotl:
1711                Log.d(
1712                        Config.LOGTAG,
1713                        AxolotlService.getLogprefix(conversation.getAccount())
1714                                + "Enabled axolotl for Contact "
1715                                + conversation.getContact().getJid());
1716                updated = conversation.setNextEncryption(Message.ENCRYPTION_AXOLOTL);
1717                item.setChecked(true);
1718                break;
1719            default:
1720                updated = conversation.setNextEncryption(Message.ENCRYPTION_NONE);
1721                break;
1722        }
1723        if (updated) {
1724            activity.xmppConnectionService.updateConversation(conversation);
1725        }
1726        updateChatMsgHint();
1727        getActivity().invalidateOptionsMenu();
1728        activity.refreshUi();
1729    }
1730
1731    public void attachFile(final int attachmentChoice) {
1732        attachFile(attachmentChoice, true);
1733    }
1734
1735    public void attachFile(final int attachmentChoice, final boolean updateRecentlyUsed) {
1736        if (attachmentChoice == ATTACHMENT_CHOICE_RECORD_VOICE) {
1737            if (!hasPermissions(
1738                    attachmentChoice,
1739                    Manifest.permission.WRITE_EXTERNAL_STORAGE,
1740                    Manifest.permission.RECORD_AUDIO)) {
1741                return;
1742            }
1743        } else if (attachmentChoice == ATTACHMENT_CHOICE_TAKE_PHOTO
1744                || attachmentChoice == ATTACHMENT_CHOICE_RECORD_VIDEO) {
1745            if (!hasPermissions(
1746                    attachmentChoice,
1747                    Manifest.permission.WRITE_EXTERNAL_STORAGE,
1748                    Manifest.permission.CAMERA)) {
1749                return;
1750            }
1751        } else if (attachmentChoice != ATTACHMENT_CHOICE_LOCATION) {
1752            if (!hasPermissions(attachmentChoice, Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
1753                return;
1754            }
1755        }
1756        if (updateRecentlyUsed) {
1757            storeRecentlyUsedQuickAction(attachmentChoice);
1758        }
1759        final int encryption = conversation.getNextEncryption();
1760        final int mode = conversation.getMode();
1761        if (encryption == Message.ENCRYPTION_PGP) {
1762            if (activity.hasPgp()) {
1763                if (mode == Conversation.MODE_SINGLE
1764                        && conversation.getContact().getPgpKeyId() != 0) {
1765                    activity.xmppConnectionService
1766                            .getPgpEngine()
1767                            .hasKey(
1768                                    conversation.getContact(),
1769                                    new UiCallback<Contact>() {
1770
1771                                        @Override
1772                                        public void userInputRequired(
1773                                                PendingIntent pi, Contact contact) {
1774                                            startPendingIntent(pi, attachmentChoice);
1775                                        }
1776
1777                                        @Override
1778                                        public void success(Contact contact) {
1779                                            invokeAttachFileIntent(attachmentChoice);
1780                                        }
1781
1782                                        @Override
1783                                        public void error(int error, Contact contact) {
1784                                            activity.replaceToast(getString(error));
1785                                        }
1786                                    });
1787                } else if (mode == Conversation.MODE_MULTI
1788                        && conversation.getMucOptions().pgpKeysInUse()) {
1789                    if (!conversation.getMucOptions().everybodyHasKeys()) {
1790                        Toast warning =
1791                                Toast.makeText(
1792                                        getActivity(),
1793                                        R.string.missing_public_keys,
1794                                        Toast.LENGTH_LONG);
1795                        warning.setGravity(Gravity.CENTER_VERTICAL, 0, 0);
1796                        warning.show();
1797                    }
1798                    invokeAttachFileIntent(attachmentChoice);
1799                } else {
1800                    showNoPGPKeyDialog(
1801                            false,
1802                            (dialog, which) -> {
1803                                conversation.setNextEncryption(Message.ENCRYPTION_NONE);
1804                                activity.xmppConnectionService.updateConversation(conversation);
1805                                invokeAttachFileIntent(attachmentChoice);
1806                            });
1807                }
1808            } else {
1809                activity.showInstallPgpDialog();
1810            }
1811        } else {
1812            invokeAttachFileIntent(attachmentChoice);
1813        }
1814    }
1815
1816    private void storeRecentlyUsedQuickAction(final int attachmentChoice) {
1817        try {
1818            activity.getPreferences()
1819                    .edit()
1820                    .putString(
1821                            RECENTLY_USED_QUICK_ACTION,
1822                            SendButtonAction.of(attachmentChoice).toString())
1823                    .apply();
1824        } catch (IllegalArgumentException e) {
1825            // just do not save
1826        }
1827    }
1828
1829    @Override
1830    public void onRequestPermissionsResult(
1831            int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
1832        final PermissionUtils.PermissionResult permissionResult =
1833                PermissionUtils.removeBluetoothConnect(permissions, grantResults);
1834        if (grantResults.length > 0) {
1835            if (allGranted(permissionResult.grantResults)) {
1836                switch (requestCode) {
1837                    case REQUEST_START_DOWNLOAD:
1838                        if (this.mPendingDownloadableMessage != null) {
1839                            startDownloadable(this.mPendingDownloadableMessage);
1840                        }
1841                        break;
1842                    case REQUEST_ADD_EDITOR_CONTENT:
1843                        if (this.mPendingEditorContent != null) {
1844                            attachEditorContentToConversation(this.mPendingEditorContent);
1845                        }
1846                        break;
1847                    case REQUEST_COMMIT_ATTACHMENTS:
1848                        commitAttachments();
1849                        break;
1850                    case REQUEST_START_AUDIO_CALL:
1851                        triggerRtpSession(RtpSessionActivity.ACTION_MAKE_VOICE_CALL);
1852                        break;
1853                    case REQUEST_START_VIDEO_CALL:
1854                        triggerRtpSession(RtpSessionActivity.ACTION_MAKE_VIDEO_CALL);
1855                        break;
1856                    default:
1857                        attachFile(requestCode);
1858                        break;
1859                }
1860            } else {
1861                @StringRes int res;
1862                String firstDenied =
1863                        getFirstDenied(permissionResult.grantResults, permissionResult.permissions);
1864                if (Manifest.permission.RECORD_AUDIO.equals(firstDenied)) {
1865                    res = R.string.no_microphone_permission;
1866                } else if (Manifest.permission.CAMERA.equals(firstDenied)) {
1867                    res = R.string.no_camera_permission;
1868                } else {
1869                    res = R.string.no_storage_permission;
1870                }
1871                Toast.makeText(
1872                                getActivity(),
1873                                getString(res, getString(R.string.app_name)),
1874                                Toast.LENGTH_SHORT)
1875                        .show();
1876            }
1877        }
1878        if (writeGranted(grantResults, permissions)) {
1879            if (activity != null && activity.xmppConnectionService != null) {
1880                activity.xmppConnectionService.getBitmapCache().evictAll();
1881                activity.xmppConnectionService.restartFileObserver();
1882            }
1883            refresh();
1884        }
1885        if (cameraGranted(grantResults, permissions) || audioGranted(grantResults, permissions)) {
1886            XmppConnectionService.toggleForegroundService(activity);
1887        }
1888    }
1889
1890    public void startDownloadable(Message message) {
1891        if (!hasPermissions(REQUEST_START_DOWNLOAD, Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
1892            this.mPendingDownloadableMessage = message;
1893            return;
1894        }
1895        Transferable transferable = message.getTransferable();
1896        if (transferable != null) {
1897            if (transferable instanceof TransferablePlaceholder && message.hasFileOnRemoteHost()) {
1898                createNewConnection(message);
1899                return;
1900            }
1901            if (!transferable.start()) {
1902                Log.d(Config.LOGTAG, "type: " + transferable.getClass().getName());
1903                Toast.makeText(getActivity(), R.string.not_connected_try_again, Toast.LENGTH_SHORT)
1904                        .show();
1905            }
1906        } else if (message.treatAsDownloadable()
1907                || message.hasFileOnRemoteHost()
1908                || MessageUtils.unInitiatedButKnownSize(message)) {
1909            createNewConnection(message);
1910        } else {
1911            Log.d(
1912                    Config.LOGTAG,
1913                    message.getConversation().getAccount() + ": unable to start downloadable");
1914        }
1915    }
1916
1917    private void createNewConnection(final Message message) {
1918        if (!activity.xmppConnectionService.hasInternetConnection()) {
1919            Toast.makeText(getActivity(), R.string.not_connected_try_again, Toast.LENGTH_SHORT)
1920                    .show();
1921            return;
1922        }
1923        activity.xmppConnectionService
1924                .getHttpConnectionManager()
1925                .createNewDownloadConnection(message, true);
1926    }
1927
1928    @SuppressLint("InflateParams")
1929    protected void clearHistoryDialog(final Conversation conversation) {
1930        final AlertDialog.Builder builder = new AlertDialog.Builder(requireActivity());
1931        builder.setTitle(getString(R.string.clear_conversation_history));
1932        final View dialogView =
1933                requireActivity().getLayoutInflater().inflate(R.layout.dialog_clear_history, null);
1934        final CheckBox endConversationCheckBox =
1935                dialogView.findViewById(R.id.end_conversation_checkbox);
1936        builder.setView(dialogView);
1937        builder.setNegativeButton(getString(R.string.cancel), null);
1938        builder.setPositiveButton(
1939                getString(R.string.confirm),
1940                (dialog, which) -> {
1941                    this.activity.xmppConnectionService.clearConversationHistory(conversation);
1942                    if (endConversationCheckBox.isChecked()) {
1943                        this.activity.xmppConnectionService.archiveConversation(conversation);
1944                        this.activity.onConversationArchived(conversation);
1945                    } else {
1946                        activity.onConversationsListItemUpdated();
1947                        refresh();
1948                    }
1949                });
1950        builder.create().show();
1951    }
1952
1953    protected void muteConversationDialog(final Conversation conversation) {
1954        final AlertDialog.Builder builder = new AlertDialog.Builder(requireActivity());
1955        builder.setTitle(R.string.disable_notifications);
1956        final int[] durations = getResources().getIntArray(R.array.mute_options_durations);
1957        final CharSequence[] labels = new CharSequence[durations.length];
1958        for (int i = 0; i < durations.length; ++i) {
1959            if (durations[i] == -1) {
1960                labels[i] = getString(R.string.until_further_notice);
1961            } else {
1962                labels[i] = TimeFrameUtils.resolve(activity, 1000L * durations[i]);
1963            }
1964        }
1965        builder.setItems(
1966                labels,
1967                (dialog, which) -> {
1968                    final long till;
1969                    if (durations[which] == -1) {
1970                        till = Long.MAX_VALUE;
1971                    } else {
1972                        till = System.currentTimeMillis() + (durations[which] * 1000L);
1973                    }
1974                    conversation.setMutedTill(till);
1975                    activity.xmppConnectionService.updateConversation(conversation);
1976                    activity.onConversationsListItemUpdated();
1977                    refresh();
1978                    requireActivity().invalidateOptionsMenu();
1979                });
1980        builder.create().show();
1981    }
1982
1983    private boolean hasPermissions(int requestCode, List<String> permissions) {
1984        final List<String> missingPermissions = new ArrayList<>();
1985        for (String permission : permissions) {
1986            if ((Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU || Config.ONLY_INTERNAL_STORAGE) && permission.equals(Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
1987                continue;
1988            }
1989            if (activity.checkSelfPermission(permission) != PackageManager.PERMISSION_GRANTED) {
1990                missingPermissions.add(permission);
1991            }
1992        }
1993        if (missingPermissions.size() == 0) {
1994            return true;
1995        } else {
1996            requestPermissions(
1997                    missingPermissions.toArray(new String[0]),
1998                    requestCode);
1999            return false;
2000        }
2001    }
2002
2003    private boolean hasPermissions(int requestCode, String... permissions) {
2004        return hasPermissions(requestCode, ImmutableList.copyOf(permissions));
2005    }
2006
2007    public void unMuteConversation(final Conversation conversation) {
2008        conversation.setMutedTill(0);
2009        this.activity.xmppConnectionService.updateConversation(conversation);
2010        this.activity.onConversationsListItemUpdated();
2011        refresh();
2012        requireActivity().invalidateOptionsMenu();
2013    }
2014
2015    protected void invokeAttachFileIntent(final int attachmentChoice) {
2016        Intent intent = new Intent();
2017        boolean chooser = false;
2018        switch (attachmentChoice) {
2019            case ATTACHMENT_CHOICE_CHOOSE_IMAGE:
2020                intent.setAction(Intent.ACTION_GET_CONTENT);
2021                intent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, true);
2022                intent.setType("image/*");
2023                chooser = true;
2024                break;
2025            case ATTACHMENT_CHOICE_RECORD_VIDEO:
2026                intent.setAction(MediaStore.ACTION_VIDEO_CAPTURE);
2027                break;
2028            case ATTACHMENT_CHOICE_TAKE_PHOTO:
2029                final Uri uri = activity.xmppConnectionService.getFileBackend().getTakePhotoUri();
2030                pendingTakePhotoUri.push(uri);
2031                intent.putExtra(MediaStore.EXTRA_OUTPUT, uri);
2032                intent.addFlags(Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
2033                intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
2034                intent.setAction(MediaStore.ACTION_IMAGE_CAPTURE);
2035                break;
2036            case ATTACHMENT_CHOICE_CHOOSE_FILE:
2037                chooser = true;
2038                intent.setType("*/*");
2039                intent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, true);
2040                intent.addCategory(Intent.CATEGORY_OPENABLE);
2041                intent.setAction(Intent.ACTION_GET_CONTENT);
2042                break;
2043            case ATTACHMENT_CHOICE_RECORD_VOICE:
2044                intent = new Intent(getActivity(), RecordingActivity.class);
2045                break;
2046            case ATTACHMENT_CHOICE_LOCATION:
2047                intent = GeoHelper.getFetchIntent(activity);
2048                break;
2049        }
2050        final Context context = getActivity();
2051        if (context == null) {
2052            return;
2053        }
2054        try {
2055            if (chooser) {
2056                startActivityForResult(
2057                        Intent.createChooser(intent, getString(R.string.perform_action_with)),
2058                        attachmentChoice);
2059            } else {
2060                startActivityForResult(intent, attachmentChoice);
2061            }
2062        } catch (final ActivityNotFoundException e) {
2063            Toast.makeText(context, R.string.no_application_found, Toast.LENGTH_LONG).show();
2064        }
2065    }
2066
2067    @Override
2068    public void onResume() {
2069        super.onResume();
2070        binding.messagesView.post(this::fireReadEvent);
2071    }
2072
2073    private void fireReadEvent() {
2074        if (activity != null && this.conversation != null) {
2075            String uuid = getLastVisibleMessageUuid();
2076            if (uuid != null) {
2077                activity.onConversationRead(this.conversation, uuid);
2078            }
2079        }
2080    }
2081
2082    private String getLastVisibleMessageUuid() {
2083        if (binding == null) {
2084            return null;
2085        }
2086        synchronized (this.messageList) {
2087            int pos = binding.messagesView.getLastVisiblePosition();
2088            if (pos >= 0) {
2089                Message message = null;
2090                for (int i = pos; i >= 0; --i) {
2091                    try {
2092                        message = (Message) binding.messagesView.getItemAtPosition(i);
2093                    } catch (IndexOutOfBoundsException e) {
2094                        // should not happen if we synchronize properly. however if that fails we
2095                        // just gonna try item -1
2096                        continue;
2097                    }
2098                    if (message.getType() != Message.TYPE_STATUS) {
2099                        break;
2100                    }
2101                }
2102                if (message != null) {
2103                    while (message.next() != null && message.next().wasMergedIntoPrevious()) {
2104                        message = message.next();
2105                    }
2106                    return message.getUuid();
2107                }
2108            }
2109        }
2110        return null;
2111    }
2112
2113    private void openWith(final Message message) {
2114        if (message.isGeoUri()) {
2115            GeoHelper.view(getActivity(), message);
2116        } else {
2117            final DownloadableFile file =
2118                    activity.xmppConnectionService.getFileBackend().getFile(message);
2119            ViewUtil.view(activity, file);
2120        }
2121    }
2122
2123    private void reportMessage(final Message message) {
2124        BlockContactDialog.show(activity, conversation.getContact(), message.getServerMsgId());
2125    }
2126
2127    private void showErrorMessage(final Message message) {
2128        AlertDialog.Builder builder = new AlertDialog.Builder(requireActivity());
2129        builder.setTitle(R.string.error_message);
2130        final String errorMessage = message.getErrorMessage();
2131        final String[] errorMessageParts =
2132                errorMessage == null ? new String[0] : errorMessage.split("\\u001f");
2133        final String displayError;
2134        if (errorMessageParts.length == 2) {
2135            displayError = errorMessageParts[1];
2136        } else {
2137            displayError = errorMessage;
2138        }
2139        builder.setMessage(displayError);
2140        builder.setNegativeButton(
2141                R.string.copy_to_clipboard,
2142                (dialog, which) -> {
2143                    activity.copyTextToClipboard(displayError, R.string.error_message);
2144                    Toast.makeText(
2145                                    activity,
2146                                    R.string.error_message_copied_to_clipboard,
2147                                    Toast.LENGTH_SHORT)
2148                            .show();
2149                });
2150        builder.setPositiveButton(R.string.confirm, null);
2151        builder.create().show();
2152    }
2153
2154    private void deleteFile(final Message message) {
2155        AlertDialog.Builder builder = new AlertDialog.Builder(requireActivity());
2156        builder.setNegativeButton(R.string.cancel, null);
2157        builder.setTitle(R.string.delete_file_dialog);
2158        builder.setMessage(R.string.delete_file_dialog_msg);
2159        builder.setPositiveButton(
2160                R.string.confirm,
2161                (dialog, which) -> {
2162                    if (activity.xmppConnectionService.getFileBackend().deleteFile(message)) {
2163                        message.setDeleted(true);
2164                        activity.xmppConnectionService.evictPreview(message.getUuid());
2165                        activity.xmppConnectionService.updateMessage(message, false);
2166                        activity.onConversationsListItemUpdated();
2167                        refresh();
2168                    }
2169                });
2170        builder.create().show();
2171    }
2172
2173    private void resendMessage(final Message message) {
2174        if (message.isFileOrImage()) {
2175            if (!(message.getConversation() instanceof Conversation)) {
2176                return;
2177            }
2178            final Conversation conversation = (Conversation) message.getConversation();
2179            final DownloadableFile file =
2180                    activity.xmppConnectionService.getFileBackend().getFile(message);
2181            if ((file.exists() && file.canRead()) || message.hasFileOnRemoteHost()) {
2182                final XmppConnection xmppConnection = conversation.getAccount().getXmppConnection();
2183                if (!message.hasFileOnRemoteHost()
2184                        && xmppConnection != null
2185                        && conversation.getMode() == Conversational.MODE_SINGLE
2186                        && !xmppConnection
2187                                .getFeatures()
2188                                .httpUpload(message.getFileParams().getSize())) {
2189                    activity.selectPresence(
2190                            conversation,
2191                            () -> {
2192                                message.setCounterpart(conversation.getNextCounterpart());
2193                                activity.xmppConnectionService.resendFailedMessages(message);
2194                                new Handler()
2195                                        .post(
2196                                                () -> {
2197                                                    int size = messageList.size();
2198                                                    this.binding.messagesView.setSelection(
2199                                                            size - 1);
2200                                                });
2201                            });
2202                    return;
2203                }
2204            } else if (!Compatibility.hasStoragePermission(getActivity())) {
2205                Toast.makeText(activity, R.string.no_storage_permission, Toast.LENGTH_SHORT).show();
2206                return;
2207            } else {
2208                Toast.makeText(activity, R.string.file_deleted, Toast.LENGTH_SHORT).show();
2209                message.setDeleted(true);
2210                activity.xmppConnectionService.updateMessage(message, false);
2211                activity.onConversationsListItemUpdated();
2212                refresh();
2213                return;
2214            }
2215        }
2216        activity.xmppConnectionService.resendFailedMessages(message);
2217        new Handler()
2218                .post(
2219                        () -> {
2220                            int size = messageList.size();
2221                            this.binding.messagesView.setSelection(size - 1);
2222                        });
2223    }
2224
2225    private void cancelTransmission(Message message) {
2226        Transferable transferable = message.getTransferable();
2227        if (transferable != null) {
2228            transferable.cancel();
2229        } else if (message.getStatus() != Message.STATUS_RECEIVED) {
2230            activity.xmppConnectionService.markMessage(
2231                    message, Message.STATUS_SEND_FAILED, Message.ERROR_MESSAGE_CANCELLED);
2232        }
2233    }
2234
2235    private void retryDecryption(Message message) {
2236        message.setEncryption(Message.ENCRYPTION_PGP);
2237        activity.onConversationsListItemUpdated();
2238        refresh();
2239        conversation.getAccount().getPgpDecryptionService().decrypt(message, false);
2240    }
2241
2242    public void privateMessageWith(final Jid counterpart) {
2243        if (conversation.setOutgoingChatState(Config.DEFAULT_CHAT_STATE)) {
2244            activity.xmppConnectionService.sendChatState(conversation);
2245        }
2246        this.binding.textinput.setText("");
2247        this.conversation.setNextCounterpart(counterpart);
2248        updateChatMsgHint();
2249        updateSendButton();
2250        updateEditablity();
2251    }
2252
2253    private void correctMessage(Message message) {
2254        while (message.mergeable(message.next())) {
2255            message = message.next();
2256        }
2257        this.conversation.setCorrectingMessage(message);
2258        final Editable editable = binding.textinput.getText();
2259        this.conversation.setDraftMessage(editable.toString());
2260        this.binding.textinput.setText("");
2261        this.binding.textinput.append(message.getBody());
2262    }
2263
2264    private void highlightInConference(String nick) {
2265        final Editable editable = this.binding.textinput.getText();
2266        String oldString = editable.toString().trim();
2267        final int pos = this.binding.textinput.getSelectionStart();
2268        if (oldString.isEmpty() || pos == 0) {
2269            editable.insert(0, nick + ": ");
2270        } else {
2271            final char before = editable.charAt(pos - 1);
2272            final char after = editable.length() > pos ? editable.charAt(pos) : '\0';
2273            if (before == '\n') {
2274                editable.insert(pos, nick + ": ");
2275            } else {
2276                if (pos > 2 && editable.subSequence(pos - 2, pos).toString().equals(": ")) {
2277                    if (NickValidityChecker.check(
2278                            conversation,
2279                            Arrays.asList(
2280                                    editable.subSequence(0, pos - 2).toString().split(", ")))) {
2281                        editable.insert(pos - 2, ", " + nick);
2282                        return;
2283                    }
2284                }
2285                editable.insert(
2286                        pos,
2287                        (Character.isWhitespace(before) ? "" : " ")
2288                                + nick
2289                                + (Character.isWhitespace(after) ? "" : " "));
2290                if (Character.isWhitespace(after)) {
2291                    this.binding.textinput.setSelection(
2292                            this.binding.textinput.getSelectionStart() + 1);
2293                }
2294            }
2295        }
2296    }
2297
2298    @Override
2299    public void startActivityForResult(Intent intent, int requestCode) {
2300        final Activity activity = getActivity();
2301        if (activity instanceof ConversationsActivity) {
2302            ((ConversationsActivity) activity).clearPendingViewIntent();
2303        }
2304        super.startActivityForResult(intent, requestCode);
2305    }
2306
2307    @Override
2308    public void onSaveInstanceState(@NotNull Bundle outState) {
2309        super.onSaveInstanceState(outState);
2310        if (conversation != null) {
2311            outState.putString(STATE_CONVERSATION_UUID, conversation.getUuid());
2312            outState.putString(STATE_LAST_MESSAGE_UUID, lastMessageUuid);
2313            final Uri uri = pendingTakePhotoUri.peek();
2314            if (uri != null) {
2315                outState.putString(STATE_PHOTO_URI, uri.toString());
2316            }
2317            final ScrollState scrollState = getScrollPosition();
2318            if (scrollState != null) {
2319                outState.putParcelable(STATE_SCROLL_POSITION, scrollState);
2320            }
2321            final ArrayList<Attachment> attachments =
2322                    mediaPreviewAdapter == null
2323                            ? new ArrayList<>()
2324                            : mediaPreviewAdapter.getAttachments();
2325            if (attachments.size() > 0) {
2326                outState.putParcelableArrayList(STATE_MEDIA_PREVIEWS, attachments);
2327            }
2328        }
2329    }
2330
2331    @Override
2332    public void onActivityCreated(Bundle savedInstanceState) {
2333        super.onActivityCreated(savedInstanceState);
2334        if (savedInstanceState == null) {
2335            return;
2336        }
2337        String uuid = savedInstanceState.getString(STATE_CONVERSATION_UUID);
2338        ArrayList<Attachment> attachments =
2339                savedInstanceState.getParcelableArrayList(STATE_MEDIA_PREVIEWS);
2340        pendingLastMessageUuid.push(savedInstanceState.getString(STATE_LAST_MESSAGE_UUID, null));
2341        if (uuid != null) {
2342            QuickLoader.set(uuid);
2343            this.pendingConversationsUuid.push(uuid);
2344            if (attachments != null && attachments.size() > 0) {
2345                this.pendingMediaPreviews.push(attachments);
2346            }
2347            String takePhotoUri = savedInstanceState.getString(STATE_PHOTO_URI);
2348            if (takePhotoUri != null) {
2349                pendingTakePhotoUri.push(Uri.parse(takePhotoUri));
2350            }
2351            pendingScrollState.push(savedInstanceState.getParcelable(STATE_SCROLL_POSITION));
2352        }
2353    }
2354
2355    @Override
2356    public void onStart() {
2357        super.onStart();
2358        if (this.reInitRequiredOnStart && this.conversation != null) {
2359            final Bundle extras = pendingExtras.pop();
2360            reInit(this.conversation, extras != null);
2361            if (extras != null) {
2362                processExtras(extras);
2363            }
2364        } else if (conversation == null
2365                && activity != null
2366                && activity.xmppConnectionService != null) {
2367            final String uuid = pendingConversationsUuid.pop();
2368            Log.d(
2369                    Config.LOGTAG,
2370                    "ConversationFragment.onStart() - activity was bound but no conversation loaded. uuid="
2371                            + uuid);
2372            if (uuid != null) {
2373                findAndReInitByUuidOrArchive(uuid);
2374            }
2375        }
2376    }
2377
2378    @Override
2379    public void onStop() {
2380        super.onStop();
2381        final Activity activity = getActivity();
2382        messageListAdapter.unregisterListenerInAudioPlayer();
2383        if (activity == null || !activity.isChangingConfigurations()) {
2384            hideSoftKeyboard(activity);
2385            messageListAdapter.stopAudioPlayer();
2386        }
2387        if (this.conversation != null) {
2388            final String msg = this.binding.textinput.getText().toString();
2389            storeNextMessage(msg);
2390            updateChatState(this.conversation, msg);
2391            this.activity.xmppConnectionService.getNotificationService().setOpenConversation(null);
2392        }
2393        this.reInitRequiredOnStart = true;
2394    }
2395
2396    private void updateChatState(final Conversation conversation, final String msg) {
2397        ChatState state = msg.length() == 0 ? Config.DEFAULT_CHAT_STATE : ChatState.PAUSED;
2398        Account.State status = conversation.getAccount().getStatus();
2399        if (status == Account.State.ONLINE && conversation.setOutgoingChatState(state)) {
2400            activity.xmppConnectionService.sendChatState(conversation);
2401        }
2402    }
2403
2404    private void saveMessageDraftStopAudioPlayer() {
2405        final Conversation previousConversation = this.conversation;
2406        if (this.activity == null || this.binding == null || previousConversation == null) {
2407            return;
2408        }
2409        Log.d(Config.LOGTAG, "ConversationFragment.saveMessageDraftStopAudioPlayer()");
2410        final String msg = this.binding.textinput.getText().toString();
2411        storeNextMessage(msg);
2412        updateChatState(this.conversation, msg);
2413        messageListAdapter.stopAudioPlayer();
2414        mediaPreviewAdapter.clearPreviews();
2415        toggleInputMethod();
2416    }
2417
2418    public void reInit(final Conversation conversation, final Bundle extras) {
2419        QuickLoader.set(conversation.getUuid());
2420        final boolean changedConversation = this.conversation != conversation;
2421        if (changedConversation) {
2422            this.saveMessageDraftStopAudioPlayer();
2423        }
2424        this.clearPending();
2425        if (this.reInit(conversation, extras != null)) {
2426            if (extras != null) {
2427                processExtras(extras);
2428            }
2429            this.reInitRequiredOnStart = false;
2430        } else {
2431            this.reInitRequiredOnStart = true;
2432            pendingExtras.push(extras);
2433        }
2434        resetUnreadMessagesCount();
2435    }
2436
2437    private void reInit(Conversation conversation) {
2438        reInit(conversation, false);
2439    }
2440
2441    private boolean reInit(final Conversation conversation, final boolean hasExtras) {
2442        if (conversation == null) {
2443            return false;
2444        }
2445        this.conversation = conversation;
2446        // once we set the conversation all is good and it will automatically do the right thing in
2447        // onStart()
2448        if (this.activity == null || this.binding == null) {
2449            return false;
2450        }
2451
2452        if (!activity.xmppConnectionService.isConversationStillOpen(this.conversation)) {
2453            activity.onConversationArchived(this.conversation);
2454            return false;
2455        }
2456
2457        stopScrolling();
2458        Log.d(Config.LOGTAG, "reInit(hasExtras=" + hasExtras + ")");
2459
2460        if (this.conversation.isRead() && hasExtras) {
2461            Log.d(Config.LOGTAG, "trimming conversation");
2462            this.conversation.trim();
2463        }
2464
2465        setupIme();
2466
2467        final boolean scrolledToBottomAndNoPending =
2468                this.scrolledToBottom() && pendingScrollState.peek() == null;
2469
2470        this.binding.textSendButton.setContentDescription(
2471                activity.getString(R.string.send_message_to_x, conversation.getName()));
2472        this.binding.textinput.setKeyboardListener(null);
2473        final boolean participating =
2474                conversation.getMode() == Conversational.MODE_SINGLE
2475                        || conversation.getMucOptions().participating();
2476        if (participating) {
2477            this.binding.textinput.setText(this.conversation.getNextMessage());
2478            this.binding.textinput.setSelection(this.binding.textinput.length());
2479        } else {
2480            this.binding.textinput.setText(MessageUtils.EMPTY_STRING);
2481        }
2482        this.binding.textinput.setKeyboardListener(this);
2483        messageListAdapter.updatePreferences();
2484        refresh(false);
2485        activity.invalidateOptionsMenu();
2486        this.conversation.messagesLoaded.set(true);
2487        Log.d(Config.LOGTAG, "scrolledToBottomAndNoPending=" + scrolledToBottomAndNoPending);
2488
2489        if (hasExtras || scrolledToBottomAndNoPending) {
2490            resetUnreadMessagesCount();
2491            synchronized (this.messageList) {
2492                Log.d(Config.LOGTAG, "jump to first unread message");
2493                final Message first = conversation.getFirstUnreadMessage();
2494                final int bottom = Math.max(0, this.messageList.size() - 1);
2495                final int pos;
2496                final boolean jumpToBottom;
2497                if (first == null) {
2498                    pos = bottom;
2499                    jumpToBottom = true;
2500                } else {
2501                    int i = getIndexOf(first.getUuid(), this.messageList);
2502                    pos = i < 0 ? bottom : i;
2503                    jumpToBottom = false;
2504                }
2505                setSelection(pos, jumpToBottom);
2506            }
2507        }
2508
2509        this.binding.messagesView.post(this::fireReadEvent);
2510        // TODO if we only do this when this fragment is running on main it won't *bing* in tablet
2511        // layout which might be unnecessary since we can *see* it
2512        activity.xmppConnectionService
2513                .getNotificationService()
2514                .setOpenConversation(this.conversation);
2515        return true;
2516    }
2517
2518    private void resetUnreadMessagesCount() {
2519        lastMessageUuid = null;
2520        hideUnreadMessagesCount();
2521    }
2522
2523    private void hideUnreadMessagesCount() {
2524        if (this.binding == null) {
2525            return;
2526        }
2527        this.binding.scrollToBottomButton.setEnabled(false);
2528        this.binding.scrollToBottomButton.hide();
2529        this.binding.unreadCountCustomView.setVisibility(View.GONE);
2530    }
2531
2532    private void setSelection(int pos, boolean jumpToBottom) {
2533        ListViewUtils.setSelection(this.binding.messagesView, pos, jumpToBottom);
2534        this.binding.messagesView.post(
2535                () -> ListViewUtils.setSelection(this.binding.messagesView, pos, jumpToBottom));
2536        this.binding.messagesView.post(this::fireReadEvent);
2537    }
2538
2539    private boolean scrolledToBottom() {
2540        return this.binding != null && scrolledToBottom(this.binding.messagesView);
2541    }
2542
2543    private void processExtras(final Bundle extras) {
2544        final String downloadUuid = extras.getString(ConversationsActivity.EXTRA_DOWNLOAD_UUID);
2545        final String text = extras.getString(Intent.EXTRA_TEXT);
2546        final String nick = extras.getString(ConversationsActivity.EXTRA_NICK);
2547        final String postInitAction =
2548                extras.getString(ConversationsActivity.EXTRA_POST_INIT_ACTION);
2549        final boolean asQuote = extras.getBoolean(ConversationsActivity.EXTRA_AS_QUOTE);
2550        final boolean pm = extras.getBoolean(ConversationsActivity.EXTRA_IS_PRIVATE_MESSAGE, false);
2551        final boolean doNotAppend =
2552                extras.getBoolean(ConversationsActivity.EXTRA_DO_NOT_APPEND, false);
2553        final String type = extras.getString(ConversationsActivity.EXTRA_TYPE);
2554        final List<Uri> uris = extractUris(extras);
2555        if (uris != null && uris.size() > 0) {
2556            if (uris.size() == 1 && "geo".equals(uris.get(0).getScheme())) {
2557                mediaPreviewAdapter.addMediaPreviews(
2558                        Attachment.of(getActivity(), uris.get(0), Attachment.Type.LOCATION));
2559            } else {
2560                final List<Uri> cleanedUris = cleanUris(new ArrayList<>(uris));
2561                mediaPreviewAdapter.addMediaPreviews(
2562                        Attachment.of(getActivity(), cleanedUris, type));
2563            }
2564            toggleInputMethod();
2565            return;
2566        }
2567        if (nick != null) {
2568            if (pm) {
2569                Jid jid = conversation.getJid();
2570                try {
2571                    Jid next = Jid.of(jid.getLocal(), jid.getDomain(), nick);
2572                    privateMessageWith(next);
2573                } catch (final IllegalArgumentException ignored) {
2574                    // do nothing
2575                }
2576            } else {
2577                final MucOptions mucOptions = conversation.getMucOptions();
2578                if (mucOptions.participating() || conversation.getNextCounterpart() != null) {
2579                    highlightInConference(nick);
2580                }
2581            }
2582        } else {
2583            if (text != null && GeoHelper.GEO_URI.matcher(text).matches()) {
2584                mediaPreviewAdapter.addMediaPreviews(
2585                        Attachment.of(getActivity(), Uri.parse(text), Attachment.Type.LOCATION));
2586                toggleInputMethod();
2587                return;
2588            } else if (text != null && asQuote) {
2589                quoteText(text);
2590            } else {
2591                appendText(text, doNotAppend);
2592            }
2593        }
2594        if (ConversationsActivity.POST_ACTION_RECORD_VOICE.equals(postInitAction)) {
2595            attachFile(ATTACHMENT_CHOICE_RECORD_VOICE, false);
2596            return;
2597        }
2598        final Message message =
2599                downloadUuid == null ? null : conversation.findMessageWithFileAndUuid(downloadUuid);
2600        if (message != null) {
2601            startDownloadable(message);
2602        }
2603    }
2604
2605    private List<Uri> extractUris(final Bundle extras) {
2606        final List<Uri> uris = extras.getParcelableArrayList(Intent.EXTRA_STREAM);
2607        if (uris != null) {
2608            return uris;
2609        }
2610        final Uri uri = extras.getParcelable(Intent.EXTRA_STREAM);
2611        if (uri != null) {
2612            return Collections.singletonList(uri);
2613        } else {
2614            return null;
2615        }
2616    }
2617
2618    private List<Uri> cleanUris(final List<Uri> uris) {
2619        final Iterator<Uri> iterator = uris.iterator();
2620        while (iterator.hasNext()) {
2621            final Uri uri = iterator.next();
2622            if (FileBackend.dangerousFile(uri)) {
2623                iterator.remove();
2624                Toast.makeText(
2625                                requireActivity(),
2626                                R.string.security_violation_not_attaching_file,
2627                                Toast.LENGTH_SHORT)
2628                        .show();
2629            }
2630        }
2631        return uris;
2632    }
2633
2634    private boolean showBlockSubmenu(View view) {
2635        final Jid jid = conversation.getJid();
2636        final boolean showReject =
2637                !conversation.isWithStranger()
2638                        && conversation
2639                                .getContact()
2640                                .getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST);
2641        PopupMenu popupMenu = new PopupMenu(getActivity(), view);
2642        popupMenu.inflate(R.menu.block);
2643        popupMenu.getMenu().findItem(R.id.block_contact).setVisible(jid.getLocal() != null);
2644        popupMenu.getMenu().findItem(R.id.reject).setVisible(showReject);
2645        popupMenu.setOnMenuItemClickListener(
2646                menuItem -> {
2647                    Blockable blockable;
2648                    switch (menuItem.getItemId()) {
2649                        case R.id.reject:
2650                            activity.xmppConnectionService.stopPresenceUpdatesTo(
2651                                    conversation.getContact());
2652                            updateSnackBar(conversation);
2653                            return true;
2654                        case R.id.block_domain:
2655                            blockable =
2656                                    conversation
2657                                            .getAccount()
2658                                            .getRoster()
2659                                            .getContact(jid.getDomain());
2660                            break;
2661                        default:
2662                            blockable = conversation;
2663                    }
2664                    BlockContactDialog.show(activity, blockable);
2665                    return true;
2666                });
2667        popupMenu.show();
2668        return true;
2669    }
2670
2671    private void updateSnackBar(final Conversation conversation) {
2672        final Account account = conversation.getAccount();
2673        final XmppConnection connection = account.getXmppConnection();
2674        final int mode = conversation.getMode();
2675        final Contact contact = mode == Conversation.MODE_SINGLE ? conversation.getContact() : null;
2676        if (conversation.getStatus() == Conversation.STATUS_ARCHIVED) {
2677            return;
2678        }
2679        if (account.getStatus() == Account.State.DISABLED) {
2680            showSnackbar(
2681                    R.string.this_account_is_disabled,
2682                    R.string.enable,
2683                    this.mEnableAccountListener);
2684        } else if (account.getStatus() == Account.State.LOGGED_OUT) {
2685            showSnackbar(R.string.this_account_is_logged_out,R.string.log_in,this.mEnableAccountListener);
2686        } else if (conversation.isBlocked()) {
2687            showSnackbar(R.string.contact_blocked, R.string.unblock, this.mUnblockClickListener);
2688        } else if (contact != null
2689                && !contact.showInRoster()
2690                && contact.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)) {
2691            showSnackbar(
2692                    R.string.contact_added_you,
2693                    R.string.add_back,
2694                    this.mAddBackClickListener,
2695                    this.mLongPressBlockListener);
2696        } else if (contact != null
2697                && contact.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)) {
2698            showSnackbar(
2699                    R.string.contact_asks_for_presence_subscription,
2700                    R.string.allow,
2701                    this.mAllowPresenceSubscription,
2702                    this.mLongPressBlockListener);
2703        } else if (mode == Conversation.MODE_MULTI
2704                && !conversation.getMucOptions().online()
2705                && account.getStatus() == Account.State.ONLINE) {
2706            switch (conversation.getMucOptions().getError()) {
2707                case NICK_IN_USE:
2708                    showSnackbar(R.string.nick_in_use, R.string.edit, clickToMuc);
2709                    break;
2710                case NO_RESPONSE:
2711                    showSnackbar(R.string.joining_conference, 0, null);
2712                    break;
2713                case SERVER_NOT_FOUND:
2714                    if (conversation.receivedMessagesCount() > 0) {
2715                        showSnackbar(R.string.remote_server_not_found, R.string.try_again, joinMuc);
2716                    } else {
2717                        showSnackbar(R.string.remote_server_not_found, R.string.leave, leaveMuc);
2718                    }
2719                    break;
2720                case REMOTE_SERVER_TIMEOUT:
2721                    if (conversation.receivedMessagesCount() > 0) {
2722                        showSnackbar(R.string.remote_server_timeout, R.string.try_again, joinMuc);
2723                    } else {
2724                        showSnackbar(R.string.remote_server_timeout, R.string.leave, leaveMuc);
2725                    }
2726                    break;
2727                case PASSWORD_REQUIRED:
2728                    showSnackbar(
2729                            R.string.conference_requires_password,
2730                            R.string.enter_password,
2731                            enterPassword);
2732                    break;
2733                case BANNED:
2734                    showSnackbar(R.string.conference_banned, R.string.leave, leaveMuc);
2735                    break;
2736                case MEMBERS_ONLY:
2737                    showSnackbar(R.string.conference_members_only, R.string.leave, leaveMuc);
2738                    break;
2739                case RESOURCE_CONSTRAINT:
2740                    showSnackbar(
2741                            R.string.conference_resource_constraint, R.string.try_again, joinMuc);
2742                    break;
2743                case KICKED:
2744                    showSnackbar(R.string.conference_kicked, R.string.join, joinMuc);
2745                    break;
2746                case TECHNICAL_PROBLEMS:
2747                    showSnackbar(R.string.conference_technical_problems, R.string.try_again, joinMuc);
2748                    break;
2749                case UNKNOWN:
2750                    showSnackbar(R.string.conference_unknown_error, R.string.try_again, joinMuc);
2751                    break;
2752                case INVALID_NICK:
2753                    showSnackbar(R.string.invalid_muc_nick, R.string.edit, clickToMuc);
2754                case SHUTDOWN:
2755                    showSnackbar(R.string.conference_shutdown, R.string.try_again, joinMuc);
2756                    break;
2757                case DESTROYED:
2758                    showSnackbar(R.string.conference_destroyed, R.string.leave, leaveMuc);
2759                    break;
2760                case NON_ANONYMOUS:
2761                    showSnackbar(
2762                            R.string.group_chat_will_make_your_jabber_id_public,
2763                            R.string.join,
2764                            acceptJoin);
2765                    break;
2766                default:
2767                    hideSnackbar();
2768                    break;
2769            }
2770        } else if (account.hasPendingPgpIntent(conversation)) {
2771            showSnackbar(R.string.openpgp_messages_found, R.string.decrypt, clickToDecryptListener);
2772        } else if (connection != null
2773                && connection.getFeatures().blocking()
2774                && conversation.countMessages() != 0
2775                && !conversation.isBlocked()
2776                && conversation.isWithStranger()) {
2777            showSnackbar(
2778                    R.string.received_message_from_stranger, R.string.block, mBlockClickListener);
2779        } else {
2780            hideSnackbar();
2781        }
2782    }
2783
2784    @Override
2785    public void refresh() {
2786        if (this.binding == null) {
2787            Log.d(
2788                    Config.LOGTAG,
2789                    "ConversationFragment.refresh() skipped updated because view binding was null");
2790            return;
2791        }
2792        if (this.conversation != null
2793                && this.activity != null
2794                && this.activity.xmppConnectionService != null) {
2795            if (!activity.xmppConnectionService.isConversationStillOpen(this.conversation)) {
2796                activity.onConversationArchived(this.conversation);
2797                return;
2798            }
2799        }
2800        this.refresh(true);
2801    }
2802
2803    private void refresh(boolean notifyConversationRead) {
2804        synchronized (this.messageList) {
2805            if (this.conversation != null) {
2806                conversation.populateWithMessages(this.messageList);
2807                updateSnackBar(conversation);
2808                updateStatusMessages();
2809                if (conversation.getReceivedMessagesCountSinceUuid(lastMessageUuid) != 0) {
2810                    binding.unreadCountCustomView.setVisibility(View.VISIBLE);
2811                    binding.unreadCountCustomView.setUnreadCount(
2812                            conversation.getReceivedMessagesCountSinceUuid(lastMessageUuid));
2813                }
2814                this.messageListAdapter.notifyDataSetChanged();
2815                updateChatMsgHint();
2816                if (notifyConversationRead && activity != null) {
2817                    binding.messagesView.post(this::fireReadEvent);
2818                }
2819                updateSendButton();
2820                updateEditablity();
2821            }
2822        }
2823    }
2824
2825    protected void messageSent() {
2826        mSendingPgpMessage.set(false);
2827        this.binding.textinput.setText("");
2828        if (conversation.setCorrectingMessage(null)) {
2829            this.binding.textinput.append(conversation.getDraftMessage());
2830            conversation.setDraftMessage(null);
2831        }
2832        storeNextMessage();
2833        updateChatMsgHint();
2834        SharedPreferences p = PreferenceManager.getDefaultSharedPreferences(activity);
2835        final boolean prefScrollToBottom =
2836                p.getBoolean(
2837                        "scroll_to_bottom",
2838                        activity.getResources().getBoolean(R.bool.scroll_to_bottom));
2839        if (prefScrollToBottom || scrolledToBottom()) {
2840            new Handler()
2841                    .post(
2842                            () -> {
2843                                int size = messageList.size();
2844                                this.binding.messagesView.setSelection(size - 1);
2845                            });
2846        }
2847    }
2848
2849    private boolean storeNextMessage() {
2850        return storeNextMessage(this.binding.textinput.getText().toString());
2851    }
2852
2853    private boolean storeNextMessage(String msg) {
2854        final boolean participating =
2855                conversation.getMode() == Conversational.MODE_SINGLE
2856                        || conversation.getMucOptions().participating();
2857        if (this.conversation.getStatus() != Conversation.STATUS_ARCHIVED
2858                && participating
2859                && this.conversation.setNextMessage(msg)) {
2860            this.activity.xmppConnectionService.updateConversation(this.conversation);
2861            return true;
2862        }
2863        return false;
2864    }
2865
2866    public void doneSendingPgpMessage() {
2867        mSendingPgpMessage.set(false);
2868    }
2869
2870    public long getMaxHttpUploadSize(Conversation conversation) {
2871        final XmppConnection connection = conversation.getAccount().getXmppConnection();
2872        return connection == null ? -1 : connection.getFeatures().getMaxHttpUploadSize();
2873    }
2874
2875    private void updateEditablity() {
2876        boolean canWrite =
2877                this.conversation.getMode() == Conversation.MODE_SINGLE
2878                        || this.conversation.getMucOptions().participating()
2879                        || this.conversation.getNextCounterpart() != null;
2880        this.binding.textinput.setFocusable(canWrite);
2881        this.binding.textinput.setFocusableInTouchMode(canWrite);
2882        this.binding.textSendButton.setEnabled(canWrite);
2883        this.binding.textinput.setCursorVisible(canWrite);
2884        this.binding.textinput.setEnabled(canWrite);
2885    }
2886
2887    public void updateSendButton() {
2888        boolean hasAttachments =
2889                mediaPreviewAdapter != null && mediaPreviewAdapter.hasAttachments();
2890        final Conversation c = this.conversation;
2891        final Presence.Status status;
2892        final String text =
2893                this.binding.textinput == null ? "" : this.binding.textinput.getText().toString();
2894        final SendButtonAction action;
2895        if (hasAttachments) {
2896            action = SendButtonAction.TEXT;
2897        } else {
2898            action = SendButtonTool.getAction(getActivity(), c, text);
2899        }
2900        if (c.getAccount().getStatus() == Account.State.ONLINE) {
2901            if (activity != null
2902                    && activity.xmppConnectionService != null
2903                    && activity.xmppConnectionService.getMessageArchiveService().isCatchingUp(c)) {
2904                status = Presence.Status.OFFLINE;
2905            } else if (c.getMode() == Conversation.MODE_SINGLE) {
2906                status = c.getContact().getShownStatus();
2907            } else {
2908                status =
2909                        c.getMucOptions().online()
2910                                ? Presence.Status.ONLINE
2911                                : Presence.Status.OFFLINE;
2912            }
2913        } else {
2914            status = Presence.Status.OFFLINE;
2915        }
2916        this.binding.textSendButton.setTag(action);
2917        final Activity activity = getActivity();
2918        if (activity != null) {
2919            this.binding.textSendButton.setImageResource(
2920                    SendButtonTool.getSendButtonImageResource(activity, action, status));
2921        }
2922    }
2923
2924    protected void updateStatusMessages() {
2925        DateSeparator.addAll(this.messageList);
2926        if (showLoadMoreMessages(conversation)) {
2927            this.messageList.add(0, Message.createLoadMoreMessage(conversation));
2928        }
2929        if (conversation.getMode() == Conversation.MODE_SINGLE) {
2930            ChatState state = conversation.getIncomingChatState();
2931            if (state == ChatState.COMPOSING) {
2932                this.messageList.add(
2933                        Message.createStatusMessage(
2934                                conversation,
2935                                getString(R.string.contact_is_typing, conversation.getName())));
2936            } else if (state == ChatState.PAUSED) {
2937                this.messageList.add(
2938                        Message.createStatusMessage(
2939                                conversation,
2940                                getString(
2941                                        R.string.contact_has_stopped_typing,
2942                                        conversation.getName())));
2943            } else {
2944                for (int i = this.messageList.size() - 1; i >= 0; --i) {
2945                    final Message message = this.messageList.get(i);
2946                    if (message.getType() != Message.TYPE_STATUS) {
2947                        if (message.getStatus() == Message.STATUS_RECEIVED) {
2948                            return;
2949                        } else {
2950                            if (message.getStatus() == Message.STATUS_SEND_DISPLAYED) {
2951                                this.messageList.add(
2952                                        i + 1,
2953                                        Message.createStatusMessage(
2954                                                conversation,
2955                                                getString(
2956                                                        R.string.contact_has_read_up_to_this_point,
2957                                                        conversation.getName())));
2958                                return;
2959                            }
2960                        }
2961                    }
2962                }
2963            }
2964        } else {
2965            final MucOptions mucOptions = conversation.getMucOptions();
2966            final List<MucOptions.User> allUsers = mucOptions.getUsers();
2967            final Set<ReadByMarker> addedMarkers = new HashSet<>();
2968            ChatState state = ChatState.COMPOSING;
2969            List<MucOptions.User> users =
2970                    conversation.getMucOptions().getUsersWithChatState(state, 5);
2971            if (users.size() == 0) {
2972                state = ChatState.PAUSED;
2973                users = conversation.getMucOptions().getUsersWithChatState(state, 5);
2974            }
2975            if (mucOptions.isPrivateAndNonAnonymous()) {
2976                for (int i = this.messageList.size() - 1; i >= 0; --i) {
2977                    final Set<ReadByMarker> markersForMessage =
2978                            messageList.get(i).getReadByMarkers();
2979                    final List<MucOptions.User> shownMarkers = new ArrayList<>();
2980                    for (ReadByMarker marker : markersForMessage) {
2981                        if (!ReadByMarker.contains(marker, addedMarkers)) {
2982                            addedMarkers.add(
2983                                    marker); // may be put outside this condition. set should do
2984                                             // dedup anyway
2985                            MucOptions.User user = mucOptions.findUser(marker);
2986                            if (user != null && !users.contains(user)) {
2987                                shownMarkers.add(user);
2988                            }
2989                        }
2990                    }
2991                    final ReadByMarker markerForSender = ReadByMarker.from(messageList.get(i));
2992                    final Message statusMessage;
2993                    final int size = shownMarkers.size();
2994                    if (size > 1) {
2995                        final String body;
2996                        if (size <= 4) {
2997                            body =
2998                                    getString(
2999                                            R.string.contacts_have_read_up_to_this_point,
3000                                            UIHelper.concatNames(shownMarkers));
3001                        } else if (ReadByMarker.allUsersRepresented(
3002                                allUsers, markersForMessage, markerForSender)) {
3003                            body = getString(R.string.everyone_has_read_up_to_this_point);
3004                        } else {
3005                            body =
3006                                    getString(
3007                                            R.string.contacts_and_n_more_have_read_up_to_this_point,
3008                                            UIHelper.concatNames(shownMarkers, 3),
3009                                            size - 3);
3010                        }
3011                        statusMessage = Message.createStatusMessage(conversation, body);
3012                        statusMessage.setCounterparts(shownMarkers);
3013                    } else if (size == 1) {
3014                        statusMessage =
3015                                Message.createStatusMessage(
3016                                        conversation,
3017                                        getString(
3018                                                R.string.contact_has_read_up_to_this_point,
3019                                                UIHelper.getDisplayName(shownMarkers.get(0))));
3020                        statusMessage.setCounterpart(shownMarkers.get(0).getFullJid());
3021                        statusMessage.setTrueCounterpart(shownMarkers.get(0).getRealJid());
3022                    } else {
3023                        statusMessage = null;
3024                    }
3025                    if (statusMessage != null) {
3026                        this.messageList.add(i + 1, statusMessage);
3027                    }
3028                    addedMarkers.add(markerForSender);
3029                    if (ReadByMarker.allUsersRepresented(allUsers, addedMarkers)) {
3030                        break;
3031                    }
3032                }
3033            }
3034            if (users.size() > 0) {
3035                Message statusMessage;
3036                if (users.size() == 1) {
3037                    MucOptions.User user = users.get(0);
3038                    int id =
3039                            state == ChatState.COMPOSING
3040                                    ? R.string.contact_is_typing
3041                                    : R.string.contact_has_stopped_typing;
3042                    statusMessage =
3043                            Message.createStatusMessage(
3044                                    conversation, getString(id, UIHelper.getDisplayName(user)));
3045                    statusMessage.setTrueCounterpart(user.getRealJid());
3046                    statusMessage.setCounterpart(user.getFullJid());
3047                } else {
3048                    int id =
3049                            state == ChatState.COMPOSING
3050                                    ? R.string.contacts_are_typing
3051                                    : R.string.contacts_have_stopped_typing;
3052                    statusMessage =
3053                            Message.createStatusMessage(
3054                                    conversation, getString(id, UIHelper.concatNames(users)));
3055                    statusMessage.setCounterparts(users);
3056                }
3057                this.messageList.add(statusMessage);
3058            }
3059        }
3060    }
3061
3062    private void stopScrolling() {
3063        long now = SystemClock.uptimeMillis();
3064        MotionEvent cancel = MotionEvent.obtain(now, now, MotionEvent.ACTION_CANCEL, 0, 0, 0);
3065        binding.messagesView.dispatchTouchEvent(cancel);
3066    }
3067
3068    private boolean showLoadMoreMessages(final Conversation c) {
3069        if (activity == null || activity.xmppConnectionService == null) {
3070            return false;
3071        }
3072        final boolean mam = hasMamSupport(c) && !c.getContact().isBlocked();
3073        final MessageArchiveService service =
3074                activity.xmppConnectionService.getMessageArchiveService();
3075        return mam
3076                && (c.getLastClearHistory().getTimestamp() != 0
3077                        || (c.countMessages() == 0
3078                                && c.messagesLoaded.get()
3079                                && c.hasMessagesLeftOnServer()
3080                                && !service.queryInProgress(c)));
3081    }
3082
3083    private boolean hasMamSupport(final Conversation c) {
3084        if (c.getMode() == Conversation.MODE_SINGLE) {
3085            final XmppConnection connection = c.getAccount().getXmppConnection();
3086            return connection != null && connection.getFeatures().mam();
3087        } else {
3088            return c.getMucOptions().mamSupport();
3089        }
3090    }
3091
3092    protected void showSnackbar(
3093            final int message, final int action, final OnClickListener clickListener) {
3094        showSnackbar(message, action, clickListener, null);
3095    }
3096
3097    protected void showSnackbar(
3098            final int message,
3099            final int action,
3100            final OnClickListener clickListener,
3101            final View.OnLongClickListener longClickListener) {
3102        this.binding.snackbar.setVisibility(View.VISIBLE);
3103        this.binding.snackbar.setOnClickListener(null);
3104        this.binding.snackbarMessage.setText(message);
3105        this.binding.snackbarMessage.setOnClickListener(null);
3106        this.binding.snackbarAction.setVisibility(clickListener == null ? View.GONE : View.VISIBLE);
3107        if (action != 0) {
3108            this.binding.snackbarAction.setText(action);
3109        }
3110        this.binding.snackbarAction.setOnClickListener(clickListener);
3111        this.binding.snackbarAction.setOnLongClickListener(longClickListener);
3112    }
3113
3114    protected void hideSnackbar() {
3115        this.binding.snackbar.setVisibility(View.GONE);
3116    }
3117
3118    protected void sendMessage(Message message) {
3119        activity.xmppConnectionService.sendMessage(message);
3120        messageSent();
3121    }
3122
3123    protected void sendPgpMessage(final Message message) {
3124        final XmppConnectionService xmppService = activity.xmppConnectionService;
3125        final Contact contact = message.getConversation().getContact();
3126        if (!activity.hasPgp()) {
3127            activity.showInstallPgpDialog();
3128            return;
3129        }
3130        if (conversation.getAccount().getPgpSignature() == null) {
3131            activity.announcePgp(
3132                    conversation.getAccount(), conversation, null, activity.onOpenPGPKeyPublished);
3133            return;
3134        }
3135        if (!mSendingPgpMessage.compareAndSet(false, true)) {
3136            Log.d(Config.LOGTAG, "sending pgp message already in progress");
3137        }
3138        if (conversation.getMode() == Conversation.MODE_SINGLE) {
3139            if (contact.getPgpKeyId() != 0) {
3140                xmppService
3141                        .getPgpEngine()
3142                        .hasKey(
3143                                contact,
3144                                new UiCallback<Contact>() {
3145
3146                                    @Override
3147                                    public void userInputRequired(
3148                                            PendingIntent pi, Contact contact) {
3149                                        startPendingIntent(pi, REQUEST_ENCRYPT_MESSAGE);
3150                                    }
3151
3152                                    @Override
3153                                    public void success(Contact contact) {
3154                                        encryptTextMessage(message);
3155                                    }
3156
3157                                    @Override
3158                                    public void error(int error, Contact contact) {
3159                                        activity.runOnUiThread(
3160                                                () ->
3161                                                        Toast.makeText(
3162                                                                        activity,
3163                                                                        R.string
3164                                                                                .unable_to_connect_to_keychain,
3165                                                                        Toast.LENGTH_SHORT)
3166                                                                .show());
3167                                        mSendingPgpMessage.set(false);
3168                                    }
3169                                });
3170
3171            } else {
3172                showNoPGPKeyDialog(
3173                        false,
3174                        (dialog, which) -> {
3175                            conversation.setNextEncryption(Message.ENCRYPTION_NONE);
3176                            xmppService.updateConversation(conversation);
3177                            message.setEncryption(Message.ENCRYPTION_NONE);
3178                            xmppService.sendMessage(message);
3179                            messageSent();
3180                        });
3181            }
3182        } else {
3183            if (conversation.getMucOptions().pgpKeysInUse()) {
3184                if (!conversation.getMucOptions().everybodyHasKeys()) {
3185                    Toast warning =
3186                            Toast.makeText(
3187                                    getActivity(), R.string.missing_public_keys, Toast.LENGTH_LONG);
3188                    warning.setGravity(Gravity.CENTER_VERTICAL, 0, 0);
3189                    warning.show();
3190                }
3191                encryptTextMessage(message);
3192            } else {
3193                showNoPGPKeyDialog(
3194                        true,
3195                        (dialog, which) -> {
3196                            conversation.setNextEncryption(Message.ENCRYPTION_NONE);
3197                            message.setEncryption(Message.ENCRYPTION_NONE);
3198                            xmppService.updateConversation(conversation);
3199                            xmppService.sendMessage(message);
3200                            messageSent();
3201                        });
3202            }
3203        }
3204    }
3205
3206    public void encryptTextMessage(Message message) {
3207        activity.xmppConnectionService
3208                .getPgpEngine()
3209                .encrypt(
3210                        message,
3211                        new UiCallback<Message>() {
3212
3213                            @Override
3214                            public void userInputRequired(PendingIntent pi, Message message) {
3215                                startPendingIntent(pi, REQUEST_SEND_MESSAGE);
3216                            }
3217
3218                            @Override
3219                            public void success(Message message) {
3220                                // TODO the following two call can be made before the callback
3221                                getActivity().runOnUiThread(() -> messageSent());
3222                            }
3223
3224                            @Override
3225                            public void error(final int error, Message message) {
3226                                getActivity()
3227                                        .runOnUiThread(
3228                                                () -> {
3229                                                    doneSendingPgpMessage();
3230                                                    Toast.makeText(
3231                                                                    getActivity(),
3232                                                                    error == 0
3233                                                                            ? R.string
3234                                                                                    .unable_to_connect_to_keychain
3235                                                                            : error,
3236                                                                    Toast.LENGTH_SHORT)
3237                                                            .show();
3238                                                });
3239                            }
3240                        });
3241    }
3242
3243    public void showNoPGPKeyDialog(boolean plural, DialogInterface.OnClickListener listener) {
3244        AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
3245        builder.setIconAttribute(android.R.attr.alertDialogIcon);
3246        if (plural) {
3247            builder.setTitle(getString(R.string.no_pgp_keys));
3248            builder.setMessage(getText(R.string.contacts_have_no_pgp_keys));
3249        } else {
3250            builder.setTitle(getString(R.string.no_pgp_key));
3251            builder.setMessage(getText(R.string.contact_has_no_pgp_key));
3252        }
3253        builder.setNegativeButton(getString(R.string.cancel), null);
3254        builder.setPositiveButton(getString(R.string.send_unencrypted), listener);
3255        builder.create().show();
3256    }
3257
3258    public void appendText(String text, final boolean doNotAppend) {
3259        if (text == null) {
3260            return;
3261        }
3262        final Editable editable = this.binding.textinput.getText();
3263        String previous = editable == null ? "" : editable.toString();
3264        if (doNotAppend && !TextUtils.isEmpty(previous)) {
3265            Toast.makeText(getActivity(), R.string.already_drafting_message, Toast.LENGTH_LONG)
3266                    .show();
3267            return;
3268        }
3269        if (UIHelper.isLastLineQuote(previous)) {
3270            text = '\n' + text;
3271        } else if (previous.length() != 0
3272                && !Character.isWhitespace(previous.charAt(previous.length() - 1))) {
3273            text = " " + text;
3274        }
3275        this.binding.textinput.append(text);
3276    }
3277
3278    @Override
3279    public boolean onEnterPressed(final boolean isCtrlPressed) {
3280        if (isCtrlPressed || enterIsSend()) {
3281            sendMessage();
3282            return true;
3283        }
3284        return false;
3285    }
3286
3287    private boolean enterIsSend() {
3288        final SharedPreferences p = PreferenceManager.getDefaultSharedPreferences(getActivity());
3289        return p.getBoolean("enter_is_send", getResources().getBoolean(R.bool.enter_is_send));
3290    }
3291
3292    public boolean onArrowUpCtrlPressed() {
3293        final Message lastEditableMessage =
3294                conversation == null ? null : conversation.getLastEditableMessage();
3295        if (lastEditableMessage != null) {
3296            correctMessage(lastEditableMessage);
3297            return true;
3298        } else {
3299            Toast.makeText(getActivity(), R.string.could_not_correct_message, Toast.LENGTH_LONG)
3300                    .show();
3301            return false;
3302        }
3303    }
3304
3305    @Override
3306    public void onTypingStarted() {
3307        final XmppConnectionService service =
3308                activity == null ? null : activity.xmppConnectionService;
3309        if (service == null) {
3310            return;
3311        }
3312        final Account.State status = conversation.getAccount().getStatus();
3313        if (status == Account.State.ONLINE
3314                && conversation.setOutgoingChatState(ChatState.COMPOSING)) {
3315            service.sendChatState(conversation);
3316        }
3317        runOnUiThread(this::updateSendButton);
3318    }
3319
3320    @Override
3321    public void onTypingStopped() {
3322        final XmppConnectionService service =
3323                activity == null ? null : activity.xmppConnectionService;
3324        if (service == null) {
3325            return;
3326        }
3327        final Account.State status = conversation.getAccount().getStatus();
3328        if (status == Account.State.ONLINE && conversation.setOutgoingChatState(ChatState.PAUSED)) {
3329            service.sendChatState(conversation);
3330        }
3331    }
3332
3333    @Override
3334    public void onTextDeleted() {
3335        final XmppConnectionService service =
3336                activity == null ? null : activity.xmppConnectionService;
3337        if (service == null) {
3338            return;
3339        }
3340        final Account.State status = conversation.getAccount().getStatus();
3341        if (status == Account.State.ONLINE
3342                && conversation.setOutgoingChatState(Config.DEFAULT_CHAT_STATE)) {
3343            service.sendChatState(conversation);
3344        }
3345        if (storeNextMessage()) {
3346            runOnUiThread(
3347                    () -> {
3348                        if (activity == null) {
3349                            return;
3350                        }
3351                        activity.onConversationsListItemUpdated();
3352                    });
3353        }
3354        runOnUiThread(this::updateSendButton);
3355    }
3356
3357    @Override
3358    public void onTextChanged() {
3359        if (conversation != null && conversation.getCorrectingMessage() != null) {
3360            runOnUiThread(this::updateSendButton);
3361        }
3362    }
3363
3364    @Override
3365    public boolean onTabPressed(boolean repeated) {
3366        if (conversation == null || conversation.getMode() == Conversation.MODE_SINGLE) {
3367            return false;
3368        }
3369        if (repeated) {
3370            completionIndex++;
3371        } else {
3372            lastCompletionLength = 0;
3373            completionIndex = 0;
3374            final String content = this.binding.textinput.getText().toString();
3375            lastCompletionCursor = this.binding.textinput.getSelectionEnd();
3376            int start =
3377                    lastCompletionCursor > 0
3378                            ? content.lastIndexOf(" ", lastCompletionCursor - 1) + 1
3379                            : 0;
3380            firstWord = start == 0;
3381            incomplete = content.substring(start, lastCompletionCursor);
3382        }
3383        List<String> completions = new ArrayList<>();
3384        for (MucOptions.User user : conversation.getMucOptions().getUsers()) {
3385            String name = user.getName();
3386            if (name != null && name.startsWith(incomplete)) {
3387                completions.add(name + (firstWord ? ": " : " "));
3388            }
3389        }
3390        Collections.sort(completions);
3391        if (completions.size() > completionIndex) {
3392            String completion = completions.get(completionIndex).substring(incomplete.length());
3393            this.binding
3394                    .textinput
3395                    .getEditableText()
3396                    .delete(lastCompletionCursor, lastCompletionCursor + lastCompletionLength);
3397            this.binding.textinput.getEditableText().insert(lastCompletionCursor, completion);
3398            lastCompletionLength = completion.length();
3399        } else {
3400            completionIndex = -1;
3401            this.binding
3402                    .textinput
3403                    .getEditableText()
3404                    .delete(lastCompletionCursor, lastCompletionCursor + lastCompletionLength);
3405            lastCompletionLength = 0;
3406        }
3407        return true;
3408    }
3409
3410    private void startPendingIntent(PendingIntent pendingIntent, int requestCode) {
3411        try {
3412            getActivity()
3413                    .startIntentSenderForResult(
3414                            pendingIntent.getIntentSender(), requestCode, null, 0, 0, 0, Compatibility.pgpStartIntentSenderOptions());
3415        } catch (final SendIntentException ignored) {
3416        }
3417    }
3418
3419    @Override
3420    public void onBackendConnected() {
3421        Log.d(Config.LOGTAG, "ConversationFragment.onBackendConnected()");
3422        String uuid = pendingConversationsUuid.pop();
3423        if (uuid != null) {
3424            if (!findAndReInitByUuidOrArchive(uuid)) {
3425                return;
3426            }
3427        } else {
3428            if (!activity.xmppConnectionService.isConversationStillOpen(conversation)) {
3429                clearPending();
3430                activity.onConversationArchived(conversation);
3431                return;
3432            }
3433        }
3434        ActivityResult activityResult = postponedActivityResult.pop();
3435        if (activityResult != null) {
3436            handleActivityResult(activityResult);
3437        }
3438        clearPending();
3439    }
3440
3441    private boolean findAndReInitByUuidOrArchive(@NonNull final String uuid) {
3442        Conversation conversation = activity.xmppConnectionService.findConversationByUuid(uuid);
3443        if (conversation == null) {
3444            clearPending();
3445            activity.onConversationArchived(null);
3446            return false;
3447        }
3448        reInit(conversation);
3449        ScrollState scrollState = pendingScrollState.pop();
3450        String lastMessageUuid = pendingLastMessageUuid.pop();
3451        List<Attachment> attachments = pendingMediaPreviews.pop();
3452        if (scrollState != null) {
3453            setScrollPosition(scrollState, lastMessageUuid);
3454        }
3455        if (attachments != null && attachments.size() > 0) {
3456            Log.d(Config.LOGTAG, "had attachments on restore");
3457            mediaPreviewAdapter.addMediaPreviews(attachments);
3458            toggleInputMethod();
3459        }
3460        return true;
3461    }
3462
3463    private void clearPending() {
3464        if (postponedActivityResult.clear()) {
3465            Log.e(Config.LOGTAG, "cleared pending intent with unhandled result left");
3466            if (pendingTakePhotoUri.clear()) {
3467                Log.e(Config.LOGTAG, "cleared pending photo uri");
3468            }
3469        }
3470        if (pendingScrollState.clear()) {
3471            Log.e(Config.LOGTAG, "cleared scroll state");
3472        }
3473        if (pendingConversationsUuid.clear()) {
3474            Log.e(Config.LOGTAG, "cleared pending conversations uuid");
3475        }
3476        if (pendingMediaPreviews.clear()) {
3477            Log.e(Config.LOGTAG, "cleared pending media previews");
3478        }
3479    }
3480
3481    public Conversation getConversation() {
3482        return conversation;
3483    }
3484
3485    @Override
3486    public void onContactPictureLongClicked(View v, final Message message) {
3487        final String fingerprint;
3488        if (message.getEncryption() == Message.ENCRYPTION_PGP
3489                || message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
3490            fingerprint = "pgp";
3491        } else {
3492            fingerprint = message.getFingerprint();
3493        }
3494        final PopupMenu popupMenu = new PopupMenu(getActivity(), v);
3495        final Contact contact = message.getContact();
3496        if (message.getStatus() <= Message.STATUS_RECEIVED
3497                && (contact == null || !contact.isSelf())) {
3498            if (message.getConversation().getMode() == Conversation.MODE_MULTI) {
3499                final Jid cp = message.getCounterpart();
3500                if (cp == null || cp.isBareJid()) {
3501                    return;
3502                }
3503                final Jid tcp = message.getTrueCounterpart();
3504                final User userByRealJid =
3505                        tcp != null
3506                                ? conversation.getMucOptions().findOrCreateUserByRealJid(tcp, cp)
3507                                : null;
3508                final User user =
3509                        userByRealJid != null
3510                                ? userByRealJid
3511                                : conversation.getMucOptions().findUserByFullJid(cp);
3512                popupMenu.inflate(R.menu.muc_details_context);
3513                final Menu menu = popupMenu.getMenu();
3514                MucDetailsContextMenuHelper.configureMucDetailsContextMenu(
3515                        activity, menu, conversation, user);
3516                popupMenu.setOnMenuItemClickListener(
3517                        menuItem ->
3518                                MucDetailsContextMenuHelper.onContextItemSelected(
3519                                        menuItem, user, activity, fingerprint));
3520            } else {
3521                popupMenu.inflate(R.menu.one_on_one_context);
3522                popupMenu.setOnMenuItemClickListener(
3523                        item -> {
3524                            switch (item.getItemId()) {
3525                                case R.id.action_contact_details:
3526                                    activity.switchToContactDetails(
3527                                            message.getContact(), fingerprint);
3528                                    break;
3529                                case R.id.action_show_qr_code:
3530                                    activity.showQrCode(
3531                                            "xmpp:"
3532                                                    + message.getContact()
3533                                                            .getJid()
3534                                                            .asBareJid()
3535                                                            .toEscapedString());
3536                                    break;
3537                            }
3538                            return true;
3539                        });
3540            }
3541        } else {
3542            popupMenu.inflate(R.menu.account_context);
3543            final Menu menu = popupMenu.getMenu();
3544            menu.findItem(R.id.action_manage_accounts)
3545                    .setVisible(QuickConversationsService.isConversations());
3546            popupMenu.setOnMenuItemClickListener(
3547                    item -> {
3548                        final XmppActivity activity = this.activity;
3549                        if (activity == null) {
3550                            Log.e(Config.LOGTAG, "Unable to perform action. no context provided");
3551                            return true;
3552                        }
3553                        switch (item.getItemId()) {
3554                            case R.id.action_show_qr_code:
3555                                activity.showQrCode(conversation.getAccount().getShareableUri());
3556                                break;
3557                            case R.id.action_account_details:
3558                                activity.switchToAccount(
3559                                        message.getConversation().getAccount(), fingerprint);
3560                                break;
3561                            case R.id.action_manage_accounts:
3562                                AccountUtils.launchManageAccounts(activity);
3563                                break;
3564                        }
3565                        return true;
3566                    });
3567        }
3568        popupMenu.show();
3569    }
3570
3571    @Override
3572    public void onContactPictureClicked(Message message) {
3573        String fingerprint;
3574        if (message.getEncryption() == Message.ENCRYPTION_PGP
3575                || message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
3576            fingerprint = "pgp";
3577        } else {
3578            fingerprint = message.getFingerprint();
3579        }
3580        final boolean received = message.getStatus() <= Message.STATUS_RECEIVED;
3581        if (received) {
3582            if (message.getConversation() instanceof Conversation
3583                    && message.getConversation().getMode() == Conversation.MODE_MULTI) {
3584                Jid tcp = message.getTrueCounterpart();
3585                Jid user = message.getCounterpart();
3586                if (user != null && !user.isBareJid()) {
3587                    final MucOptions mucOptions =
3588                            ((Conversation) message.getConversation()).getMucOptions();
3589                    if (mucOptions.participating()
3590                            || ((Conversation) message.getConversation()).getNextCounterpart()
3591                                    != null) {
3592                        if (!mucOptions.isUserInRoom(user)
3593                                && mucOptions.findUserByRealJid(
3594                                                tcp == null ? null : tcp.asBareJid())
3595                                        == null) {
3596                            Toast.makeText(
3597                                            getActivity(),
3598                                            activity.getString(
3599                                                    R.string.user_has_left_conference,
3600                                                    user.getResource()),
3601                                            Toast.LENGTH_SHORT)
3602                                    .show();
3603                        }
3604                        highlightInConference(user.getResource());
3605                    } else {
3606                        Toast.makeText(
3607                                        getActivity(),
3608                                        R.string.you_are_not_participating,
3609                                        Toast.LENGTH_SHORT)
3610                                .show();
3611                    }
3612                }
3613                return;
3614            } else {
3615                if (!message.getContact().isSelf()) {
3616                    activity.switchToContactDetails(message.getContact(), fingerprint);
3617                    return;
3618                }
3619            }
3620        }
3621        activity.switchToAccount(message.getConversation().getAccount(), fingerprint);
3622    }
3623
3624    private Activity requireActivity() {
3625        final Activity activity = getActivity();
3626        if (activity == null) {
3627            throw new IllegalStateException("Activity not attached");
3628        }
3629        return activity;
3630    }
3631}